Omron SYSMAC CS1W-SCB41-V1 Operation Manual page 493

Mitsubishi Computer Link Master (A-compatible 1C Frame, Model 1)
Loopback Test
(Sequence No. 818 (Hex 0332)) (Command Code: TT)
This sequence executes a loopback test at the Mitsubishi Computer Link Module with the specified station
number (and the PLC number that follows). (E.g, if the data starting from the specified word + 3 is sent from the
host, the Computer Link Module will return the data unchanged to the host.)
Send Data Word Allocation (3rd Operand of PMCR(260))
Receive Data Word Allocation (4th Operand of PMCR(260)
464
+0 Number of send data words
First word of
send data +1 Station No.
+2
(Undefined)
+3 Loopback data
Offset Contents (data format)
+0 Number of send data words
(4 digits hex)
+1 Station No.
(2 digits hex)
+2 (Undefined)
+3 Loopback data
+0 Number of receive data words
Receive data
storage words +1
Station No.
+2 Data length
+3 Loopback data
Offset Contents (data format)
+0 Number of receive data words
+1 Station No.
(2 digits hex)
+2 Data length
(2 digits hex)
+3 Loopback data
PLC No.
Data length
Always 0005 hex (5 decimal)
PLC No. Station No.: 00 to FF hex
(2 digits hex) PLC No.: 00 to FF hex
Data length Set the number of bytes of loopback
(2 digits hex) data in S+3 onwards.
Set the loopback data to send.
PLC No.
0002 to 00FA hex (2 to 250 decimal)
PLC No. Station No.: 00 to FF hex
(2 digits hex) PLC No.: 00 to FF hex
The data length for the loopback data is
stored.
The loopback data is stored
unchanged.
Appendix E
Data
Data