YASKAWA MP920 User Manual page 233

2. COMMAND
Code Symbol
1 U_SEND General-purpose message sent.
2
U_REC General-purpose message received.
3 ABORT Aborted.
8 M_SEND MEMOBUS command sent: Processing completed upon
receiving response.
9 M_REC MEMOBUS command received: Followed by the sending
response.
C MR_SEND MEMOBUS response sent.
3. RESULT
Code Symbol
1
SEND_OK
2 REC_OK
3 ABORT_OK
4 FMT_NG
5 SEQ_NG, or INIT_NG Command sequence error:
6 RESET_NG, or
O_RING_NG
7 REC_NG
4. PARAMETER
PARAMETER indicates one of the error codes shown in Table A.1. when RESULT is
set to 4 (FMT_NG). Otherwise, it indicates the address of the remote station.
Table A.1 Error Codes
Code
00 No errors.
01 Station address outside the allowable range.
02 MEMOBUS response receiving time error
03 Retry count setting error
04
Cyclic area setting error
05 Message signal CPU number error
06 Message signal register number error
07 Message signal word count error
5. REQUEST
1 = Request
0 = Acceptance completion report
A-5
A.1 SEND MESSAGE Function (MSG-SND)
Meaning
Meaning
Send has been completed normally.
Receive has been completed normally.
Abort completed.
Parameter format error
The token has not been received yet.
The communications system has not been connected.
Reset state:
Out-of-ring. The token was not be received even after
the token monitor time had elapsed.
Data receive error (error detected by a lower-level pro-
gram)
Error
A