A Standard System Protocol
R-64
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
This sequence executes a loopback test at the Mitsubishi Computer Link Module with the specified sta-
tion 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)
Loopback Test
(Sequence No. 818 (Hex 0332)) (Command Code: TT)
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
on
Loopback data
Set the loopback data to send.
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
on
Loopback data
The loopback data is stored unchanged.
+0
+1
+2
+3
on
Number of send data words
PLC No.
Station No.
Data length
(Undefined)
Loopback data
First word of
send data
+0
+1
+2
+3
on
Number of receive data words
PLC No.
Station No.
Data length
Loopback data
Receive data
storage words
Содержание CJ1W-SCU22
Страница 192: ...4 Using Protocol Macros 4 56 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 250: ...6 No protocol Mode 6 22 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 460: ...A Standard System Protocol R 126 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 473: ...Index 1 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494 I Index...