Reading/Writing Word Devices Of Other Stations (Read/Write) - Mitsubishi QJ71E71-100 User Manual

4 WHEN THE QCPU ACCESSES THE OTHER STATION PLC USING THE
DATA LINK INSTRUCTION

4.6 Reading/Writing Word Devices of Other Stations (READ/WRITE)

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This section explains the format and program examples of the READ/WRITE
instructions that are used to read and write data of word devices of other stations.
For details, see Sections 6.4, and 6.10 to 6.12.
(1) Instruction format
(a) READ/SREAD instructions
[Network number designation]
Read command
JP.READ
Read command
JP.SREAD
[Network module/Ethernet module start I/O signal designation]
Read command
GP.READ
Read command
GP.SREAD
Jn Local station network number
Start I/O signal of the local station network module/Ethernet
module.
Un
Designate by higher two digits when the I/O signal is
expressed by three digits.
Control data storage head device
(S1) Designate the head device of the local station that stores
the control data.
Read data storage head device (target station)
(S2) Designate the head device of the target station that stores
the data to read.
Read data storage head device (local station)
(D1) Designate the head device of the local station that stores
the data to read.
Read completion device (local station)
Designate the device of the local station to turn on one
scan when the read is complete.
(D2)
(D2) ................... OFF: Incomplete
(D2) + 1 ............. OFF: Normal
Read notify device (target station)
Designate the device of the target station to turn on one
scan when the read is complete.
(D3)
(Can recognize data of target station has been read from
other station.)
(D3) ................... OFF: Incomplete
1: Bit device .................................. X, Y, M, L, F, V, B
2: Word device ............................... T, C, D, W, ST, R, ZR
3: Word device bit designation ......
Jn
(S1) (S2)
Jn
(S1) (S2)
Un
(S1) (S2)
Un
(S1) (S2)
Setting details
ON: Complete
ON: Abnormal
ON: Complete
.
Word device Bit number
MELSEC-Q
JP: Execution
(D1) (D2)
JP: Execution
(D1) (D2) (D3)
GP: Execution
(D1) (D2)
GP: Execution
(D1) (D2) (D3)
Setting range
1 to 239: Network number
254: Network designated in a
valid module for other station
access.
0 to FE
H
2
Word device
2
Word device
2
Word device
1
Bit device
Word device bit designation
1
Bit device
Word device bit designation
during startup
during start up
during startup
during startup
3
3
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