Yaskawa MP900 Series Machine Controller New Ladder Editor - Manual (Page 200)

2.1 Message Functions
2-7
2
Function Code (PARAM04)
The MEMOBUS function code to be sent is set. Refer to Table 2.4.
Note: 1. −: cannot be set, OK: can be set
2. Only MW (MB) can be used as the sending/receiving register dur-
ing master operation. The MB, MW, IB, and IW registers can be
used respectively as the coil, holding register, input relay, and input
registers during slave operation.
Table 2.4 Function Codes
Function Code Setting
00H Unused −
01H Read coil status OK
02H Read input relay status OK
03H Read contents of holding register OK
04H Read contents of input register OK
05H Change status of single coil OK
06H Write into a single holding register OK
07H Unused −
08H Loop-back test OK
09H Read contents of holding register (expanded) OK
0AH Read contents of input register (expanded) OK
0BH Write into holding register (expanded) OK
0CH Unused −
0DH Discontinuous readout of holding register (expanded) OK
0EH Discontinuous write into holding register (expanded) OK
0FH Change status of a multiple coil OK
10H Write into a plurality of holding register OK
11H to 20H Unused −
21H to 3FH System reserved −
40H to 4FH System reserved −
50H to Unused −