FX3U Protocol Record, Binary Format

FX3U Protocl snippet.md

FX3U Protocol record

Note: all data format is hexadecimal

we know some character mean is the below

• 02 is STX
• 03 is ETX
• 05 is ENQ
• 06 is ACK
• 15 is NACK

basic format STX, COMMAND, Parameters, ETX, CHKSUM

---

Commands list

• '0'(30), BASIC READ COMMAND,
• '1'(31), BASIC WRITE COMMAND
• 'E0'(45, 30) EXTENSION READ COMMAND. Address to 20bits
• 'E1'(45, 31) EXTENSION WRITE COMMAND, Address to 20bits

---

Example basic read command 02 30 30 45 30 32 30 32 03 36 43

  02, STX
  30, '0', basic read
  30 45 30 32, '0E02', read address
  30 32, '02', read 2bytes
  03, ETX
  36, 43, Checksum

How to calculate Checksum

Example:

exmaple command sequence 02 30 30 45 30 32 30 32 03 36 43

remove STX from command sequence and sum until ETX

30 + 30 + 45 + 30 + 32 + 30 + 32 + 03(ETX) = 16C mode 256 = 6C

convert 6C to ASCII code 6 --> 36, C --> 43

---

record data

• ==> is data send from Host(PC send command)
• <== is data feedback from PLC(FX3U reponse)

==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 45 30 31 38 30 30 30 30 32 03 44 33
<== 02 31 30 30 30 03 43 34
==> 02 45 30 31 38 30 34 34 30 43 03 45 43
<== 02 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 03 38 33
==> 02 45 30 30 38 30 30 30 46 45 03 46 42
<== 02 43 38 30 30 41 38 35 45 30 38 30 30 31 30 30 30 38 32 31 46 32 30 30 30 31 42 30 30 30 33 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 44 30 30 31 43 30 30 30 30 30 30 30 30 30 30 31 34 30 30 46 46 30 30 44 37 30 33 30 30 30 30 30 30 30 30 30 30 30 30 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 30 30 30 30 46 46 46 46 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 42 31 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 46 34 30 31 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 36 34 30 30 36 38 33 46 30 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 44 43 30 44 42 36 33 44 30 30 30 30 30 30 30 30 30 30 30 30 30 31 30 30 30 30 30 30 30 31 30 30 30 32 30 30 30 33 30 30 30 30 30 30 03 36 41
==> 02 45 30 30 38 30 46 45 30 32 03 46 44
<== 02 30 30 30 30 03 43 33
==> 02 46 35 30 31 31 30 38 30 30 36 03 30 45
<== 02 31 30 30 30 03 43 34
==> 02 45 30 30 38 31 35 32 30 32 03 44 41
<== 02 30 30 30 30 03 43 33
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 46 35 30 31 31 30 38 30 30 36 03 30 45
<== 02 31 30 30 30 03 43 34
==> 02 46 35 30 31 31 30 38 30 30 36 03 30 45
<== 02 31 30 30 30 03 43 34
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 45 30 31 38 30 30 30 30 32 03 44 33
<== 02 31 30 30 30 03 43 34
==> 02 45 30 31 38 30 34 34 30 43 03 45 43
<== 02 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 03 38 33
==> 02 45 30 30 38 30 30 30 46 45 03 46 42
<== 02 43 38 30 30 41 38 35 45 30 38 30 30 31 30 30 30 38 32 31 46 32 30 30 30 31 42 30 30 30 33 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 44 30 30 31 43 30 30 30 30 30 30 30 30 30 30 31 34 30 30 46 46 30 30 44 37 30 33 30 30 30 30 30 30 30 30 30 30 30 30 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 30 30 30 30 46 46 46 46 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 42 31 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 46 34 30 31 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 36 34 30 30 36 38 33 46 30 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 44 43 30 44 42 36 33 44 30 30 30 30 30 30 30 30 30 30 30 30 30 31 30 30 30 30 30 30 30 31 30 30 30 32 30 30 30 33 30 30 30 30 30 30 03 36 41
==> 02 45 30 30 38 30 46 45 30 32 03 46 44
<== 02 30 30 30 30 03 43 33
==> 02 46 35 30 31 31 30 38 30 30 36 03 30 45
<== 02 31 30 30 30 03 43 34
==> 02 46 35 30 31 31 30 38 30 30 36 03 30 45
<== 02 31 30 30 30 03 43 34
==> 02 45 30 30 38 31 35 32 30 32 03 44 41
<== 02 30 30 30 30 03 43 33
==> 02 45 30 31 38 30 34 36 30 32 03 44 44
<== 02 30 30 30 30 03 43 33
==> 02 45 30 31 38 30 34 36 30 32 03 44 44
<== 02 30 30 30 30 03 43 33
==> 02 45 30 30 38 31 35 32 30 32 03 44 41
<== 02 30 30 30 30 03 43 33
==> 02 45 30 31 38 30 30 38 30 38 03 45 31
<== 02 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 03 31 33
==> 02 45 30 31 38 30 30 30 35 43 03 45 39
<== 02 31 30 30 30 44 38 42 41 30 30 30 30 30 30 30 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 46 34 30 39 46 46 30 42 46 34 30 31 45 37 30 33 36 34 30 45 43 37 30 45 44 43 30 45 46 46 30 45 39 30 30 31 46 45 30 33 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 38 33 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 03 42 43
==> 02 46 35 30 31 30 34 32 36 31 03 44 43
<== 02 30 03 33 33
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 45 30 31 38 30 30 30 30 32 03 44 33
<== 02 31 30 30 30 03 43 34
==> 02 45 30 31 38 30 34 34 30 43 03 45 43
<== 02 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 03 38 33
==> 02 45 30 30 38 30 30 30 46 45 03 46 42
<== 02 43 38 30 30 41 38 35 45 30 38 30 30 31 30 30 30 38 32 31 46 32 30 30 30 31 42 30 30 30 33 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 44 30 30 31 43 30 30 30 30 30 30 30 30 30 30 31 34 30 30 46 46 30 30 44 37 30 33 30 30 30 30 30 30 30 30 30 30 30 30 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 30 30 30 30 46 46 46 46 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 42 31 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 46 34 30 31 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 36 34 30 30 36 38 33 46 30 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 44 43 30 44 42 36 33 44 30 30 30 30 30 30 30 30 30 30 30 30 30 31 30 30 30 30 30 30 30 31 30 30 30 32 30 30 30 33 30 30 30 30 30 30 03 36 41
==> 02 45 30 30 38 30 46 45 30 32 03 46 44
<== 02 30 30 30 30 03 43 33
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 45 34 31 38 30 35 43 30 46 30 30 03 36 33
<== 02 31 38 30 35 43 03 31 34
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 45 30 31 38 30 35 45 30 32 03 45 44
<== 02 46 46 46 46 03 31 42
==> 02 45 30 30 38 31 35 32 30 32 03 44 41
<== 02 30 30 30 30 03 43 33
==> 02 45 30 30 38 31 35 32 30 32 03 44 41
<== 02 30 30 30 30 03 43 33
==> 02 45 30 31 38 30 30 38 30 38 03 45 31
<== 02 32 30 32 30 32 30 32 30 32 30 32 30 32 30 32 30 03 31 33
==> 02 46 38 03 38 31
<== 02 31 38 30 35 43 03 31 34
==> 02 45 30 31 38 30 35 43 46 45 03 31 34
<== 02 30 46 30 30 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 03 34 44
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 45 30 31 38 30 30 30 30 32 03 44 33
<== 02 31 30 30 30 03 43 34
==> 02 45 30 31 38 30 34 34 30 43 03 45 43
<== 02 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 03 38 33
==> 02 45 30 30 38 30 30 30 46 45 03 46 42
<== 02 43 38 30 30 41 38 35 45 30 38 30 30 31 30 30 30 38 32 31 46 32 30 30 30 31 42 30 30 30 33 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 44 30 30 31 43 30 30 30 30 30 30 30 30 30 30 31 34 30 30 46 46 30 30 44 37 30 33 30 30 30 30 30 30 30 30 30 30 30 30 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 30 30 30 30 46 46 46 46 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 42 31 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 46 34 30 31 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 36 34 30 30 36 38 33 46 30 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 44 43 30 44 42 36 33 44 30 30 30 30 30 30 30 30 30 30 30 30 30 31 30 30 30 30 30 30 30 31 30 30 30 32 30 30 30 33 30 30 30 30 30 30 03 36 41
==> 02 45 30 30 38 30 46 45 30 32 03 46 44
<== 02 30 30 30 30 03 43 33
==> 02 46 35 30 31 31 30 38 30 30 36 03 30 45
<== 02 31 30 30 30 03 43 34
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 45 30 31 38 30 30 30 30 32 03 44 33
<== 02 31 30 30 30 03 43 34
==> 02 45 30 31 38 30 34 34 30 43 03 45 43
<== 02 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 03 38 33
==> 02 45 30 30 38 30 30 30 46 45 03 46 42
<== 02 43 38 30 30 41 38 35 45 30 38 30 30 31 30 30 30 38 32 31 46 32 30 30 30 31 42 30 30 30 33 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 44 30 30 31 43 30 30 30 30 30 30 30 30 30 30 31 34 30 30 46 46 30 30 44 37 30 33 30 30 30 30 30 30 30 30 30 30 30 30 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 30 30 30 30 46 46 46 46 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 42 31 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 46 34 30 31 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 36 34 30 30 36 38 33 46 30 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 44 43 30 44 42 36 33 44 30 30 30 30 30 30 30 30 30 30 30 30 30 31 30 30 30 30 30 30 30 31 30 30 30 32 30 30 30 33 30 30 30 30 30 30 03 36 41
==> 02 45 30 30 38 30 46 45 30 32 03 46 44
<== 02 30 30 30 30 03 43 33
==> 02 46 35 30 31 31 30 38 30 30 36 03 30 45
<== 02 31 30 30 30 03 43 34
==> 05
<== 06
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 30 30 45 30 32 30 32 03 36 43
<== 02 41 38 35 45 03 46 36
==> 02 30 30 45 43 41 30 32 03 38 45
<== 02 36 38 33 46 03 45 41
==> 02 45 30 31 38 30 30 30 30 32 03 44 33
<== 02 31 30 30 30 03 43 34
==> 02 45 30 31 38 30 34 34 30 43 03 45 43
<== 02 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 03 38 33
==> 02 45 30 30 38 30 30 30 46 45 03 46 42
<== 02 43 38 30 30 41 38 35 45 30 38 30 30 31 30 30 30 38 32 31 46 32 30 30 30 31 42 30 30 30 33 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 41 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 44 30 30 31 43 30 30 30 30 30 30 30 30 30 30 31 34 30 30 46 46 30 30 44 37 30 33 30 30 30 30 30 30 30 30 30 30 30 30 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 30 30 30 30 46 46 46 46 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 33 42 31 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 46 34 30 31 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 36 34 30 30 36 38 33 46 30 38 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 44 43 30 44 42 36 33 44 30 30 30 30 30 30 30 30 30 30 30 30 30 31 30 30 30 30 30 30 30 31 30 30 30 32 30 30 30 33 30 30 30 30 30 30 03 36 41
==> 02 45 30 30 38 30 46 45 30 32 03 46 44
<== 02 30 30 30 30 03 43 33

There's an additional 2 commands that apparently exists, 0x37 and 0x38 (hex), which seems to be force write bit HIGH or LOW respectfully. For example to set M0 to high, this is the command (in hex):
02 37 30 30 30 38 03 30 32
02 is STX (start text)
37 forces the address bit HIGH?
30 30 30 38 is the ascii bytes of the address 2048 (0x800 hex) (directly calculated from M0), but the bytes are in the order 2, 3, 0, 1 for some reason
03 is ETX (end text)
Last 2 bytes are the checksum.

Do you know anything about this?

Oh wait I misread your FX3U simulator code, I though the force set/reset was a part of the extension command but it's in the same processing section as the basic read/write commands

Yes, You got point! on legacy FX1/FX2 PLC use the basic command. '7' & '8' to set/reset bit

Do you know if they support batched writing commands or is it only batched read? I cannot get batch writing to work, despite trying to mimic it from your simulator code, my PLC just doesn't respond

My simulator code is not complete. It only implements the PLC identification process.
Write command only support write a value, length for type size.

Okay. Thank you!