Transient Function - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
16 External PLC link
16.1 CC-Link

16.1.5 Transient Function

Transient function enables data to be written and read with an arbitrary station when needed, without constantly transmitting
data. To enable this function, the counterpart station should also support the transient function.
This function follows RIRD/RIWT instructions.
This function is available at the PC's medium speed. Do not use this at the PC's high speed.
Including when two or more projects are set by the multi-project function, two or more instructions cannot be executed at a
time through the entire program. Thus, give the second instruction after completing the first instruction.
When using the multi-project function, the target device of host station by the transient instruction from the other station is
assigned to the first project's devices.
Transient Instruction (RIRD/RIWT) format
Compatible instruc-
Available instructions: G.RIRD, G.RIWT
tion mode
Setting
Bit devices
data
X Y M L
S
D1
D2
○ ○ ○ ○ ○ ○ ○
Extension instruc-
Available instructions: G.RIRD, GP.RIRD, G.RIWT, GP.RIWT
tion mode
Setting
Bit devices
data
X Y M L
S
D1
D2
○ ○ ○ ○ ○ ○ ○
G.RIRD/RIWT
7 steps
GP.RIRD/RIWT
11 steps
These instructions are directed to the master/local stations of either QnCPU or Mitsubishi Electric CNC.
IB-1501668-B
Usable devices
F B SB T SM V T C
○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○
○
Usable devices
F B SB T SM V T C
○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○
○
G.RIRD
GP.RIRD
Word devices
D R ZR W SW Z SD K
○
○
Word devices
D R ZR W SW Z SD K
○
○
Un S1 D1 D2
Un S1 D1 D2
936
Con-
Pointer Digit Index
stant
H P
Con-
Pointer Digit Index
stant
H P