Appendix G MSG-SND/MSG-RCV Functions (Ethernet)
G.2 Message Receive Function (MSG-RCV)
A-111
( 3 ) Status (PARAM01)
Outputs status of the communication section (communication device). The following figure shows the bit assignment.
The bit assignment details are listed in the following tables.
[ a ] REQUEST (request)
Outputs whether MSG-RCV function is requesting a process.
[ b ] RESULT (result)
Outputs the execution result of the MSG-RCV function
[ c ] COMMAND (command)
Outputs a process command for the MSG-RCV function The executed process content can be found according to the
command.
FEDCBA9876543210
Bit F
(a) REQUEST
Bits C to E
(b) RESULT
Bits 8 to B
(c) COMMAND
Bits 0 to 7
(d) PARAMETER
Bit State Contents
1 Requesting to process
0 The acceptance of process request is completed
Code Abbreviation Meaning
0 CONN_NG
In Ethernet communications, transmit error or connection error is com-
pleted
1 SEND_OK Normal transmission completed
2 REC_OK Normal reception completed
3 ABORT_OK Forced abort completed
4 FMT_NG Parameter format error
5 SEQ_NG Command sequence error
6 RESET_NG Reset state
7 REC_NG Data reception error (error detected in the lower layer program)
Code (Hex) Abbreviation Meaning
1 U_SEND General-purpose message transmission
2 U_REC General-purpose message reception
3 ABORT Forced abort
8 M_SEND
Command transmission: Completed when response is received
(for MEMOBUS protocol)
9 M_REC
Command reception: Accompanies a response transmission
(for MEMOBUS protocol)
C MR_SEND Response transmission (for MEMOBUS protocol)
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