Yaskawa MP900 Series Ladder Programming Manual - Manual (Page 325)

5.10 System Function Instructions
5.10.7 Receive Message (MSG-RCV)
5-256
„
Remote Station Number (PARAM02)
The station number of the source is output to this parameter.
„ Function Code (PARAM04)
The MEMOBUS function code that was received is output to this parameter.
The MEMOBUS function codes are listed in the following table.
ΠWhen the target device is operating as a slave, MB, MW, IB, and IW data can be read and written for coils, hold
registers, input relays, and input registers, respectively.
„ Data Address (PARAM05)
The data address that was requested by the sending node is output to this parameter
„
Data Size (PARAM06)
The data size (number of bits or number of words) in the read or write request is output to this parameter.
„ Remote CPU Number (PARAM07)
If the remote device is an MP2000-series Machine Controller, 1 is output to this parameter.
If the remote device is any other Yaskawa Controller that consists of more than one CPU Module, the CPU number is
output to this parameter.
In all other cases, 0 is output to this parameter.
Function Code Setting
00 hex Not used. ×
01 hex Read Coil Status {
02 hex Read Input Relay Status {
03 hex Read Hold Register Contents {
04 hex Read Input Register Contents {
05 hex Change Single Coil Status {
06 hex Write Single Hold Register {
07 hex Not used. ×
08 hex Loopback Test {
09 hex Expanded Read Hold Register Contents {
0A hex Expanded Read Input Register Contents {
0B hex Expanded Write Hold Register {
0C hex Not used. ×
0D hex Expanded Read Nonconsecutive Hold Registers {
0E hex Expanded Write Nonconsecutive Hold Registers {
0F hex Change Multiple Coil Status {
10 hex Write Multiple Hold Registers {
11 hex to 20 hex Not used. ×
21 hex to 3F hex Reserved for system. ×
40 hex to 4F hex Reserved for system. ×
50 hex and higher Not used. ×