Yaskawa MP2300S Basic Module - Manual (Page 390)

Appendix G MSG-SND/MSG-RCV Functions (Ethernet)
G.1 Message Transmit Function (MSG-SND)
A-68
( 5 ) Option (PARAM03)
Choose a unique setting for each communication device.
This is not used by the MELSEC protocol, and does not require setting when MELSEC is used.
( 6 ) Function Code (PARAM04)
Set a function code to transmit.
The functions (read bit/word device, write to word device, etc.) registered in the function codes are made available by
specifying the code.
The following table lists function codes used with the MELSEC protocol.
Note: 1. B: Bit type, W: Integer type
2. AnCPU dedicated commands are not supported. When accessing AnCPU, also use the ACPU com-
mon commands. You cannot access the AnCPU extended file register.
Table G.6 Function Code List
Function Code
MELSEC ACPU
Common Command
Target Data
Type
Function
01H/02H 00H B Reads bit device in units
03H/04H/09H/0AH 01H W Reads word device in units
05H/0FH 02H B Writes to bit device in units
06H/0BH/10H 03H W Writes to word device in units
08H 16H – Loopback test
0EH 05H B
Specifies a device number for each word device at random
and sets/resets each device
31H 60H W Writes to the fixed buffer in words
32H 61H W Reads from the random access buffer in words
33H 62H W Writes to the random access buffer in words