Omron SYSMAC CJ1W-SCU21-V1, Руководство по эксплуатации

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Mitsubishi Computer Link Master (A-compatible 1C Frame, Model 1) Appendix E
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)
Offset Contents (data format) Data
+0 Number of send data words
(4 digits hex) Always 0005 hex (5 decimal)
+1 Station No.
(2 digits hex) PLC No.
(2 digits hex) Station No.: 00 to FF hex
PLC No.: 00 to FF hex
+2 (Undefined) Data length
(2 digits hex)
Set the number of bytes of loopback
data in S+3 onwards.
+3
Loopback data Set the loopback data to send.
+0
+1
+2
+3
Number of send data words
PLC No. Station No.
Data length (Undefined)
Loopback data
First word of
send data
Offset Contents (data format) Data
+0
Number of receive data words 0002 to 00FA hex (2 to 250 decimal)
+1 Station No.
(2 digits hex) PLC No.
(2 digits hex) Station No.: 00 to FF hex
PLC No.: 00 to FF hex
+2 Data length
(2 digits hex) The data length for the loopback data is
stored.
+3 Loopback data The loopback data is stored
unchanged.
+0
+1
+2
+3
Number of receive data words
PLC No. Station No.
Data length
Loopback data
Receive data
storage words