YASKAWA JEPMC-MP2300S-E, User Manual

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( 6 ) Function Code (PARAM04)
Set a function code to transmit.
The functions (read coil or input relay state, write to holding register, etc.) registered in the function codes are made
available by specifying the code.
The following table shows the function codes available when using a MEMOBUS or Extended MEMOBUS protocol.
Note: 1. B: Bit type, W: Integer type
2.
√
: Available, - : Not available
3. Transmit and receive registers in the master operation mode are MW (MB) only.
4. In slave operation mode, the coil, holding register, input relay, and input register are MB, MW, IB, IW
respectively.
Table G.1 Function Code List (MEMOBUS, Extended MEMOBUS)
Function Code
Target Data
Type
Function
Protocol Type
Extended
MEMOBUS
MEMOBUS
00H
–
Unused
– –
01H
B
Reads coil state
√ √
02H
B
Reads input relay state
√ √
03H
W
Reads holding register content
√ √
04H
W
Reads input register content
√ √
05H
B
Changes single coil state
√ √
06H
W
Writes to single holding register
√ √
07H
–
Unused
– –
08H
–
Loopback test
√ √
09H
W
Reads holding register content (extended)
√
–
0AH
W
Reads input register content (extended)
√
–
0BH
W
Writes to holding register (extended)
√
–
0CH
–
Unused
– –
0DH
W
Discontinuously reads holding register
(extended)
√
–
0EH
W
Discontinuously writes to holding register
(extended)
√
–
0FH
B
Changes multiple coil states
√ √
10H
W
Writes to multiple holding registers
√ √