Link System Using Eh-Rmd - Hitachi HIDIC EH-150 Applications Manual
Devicenet master module(eh-rmd)/ slave controller(eh-iocd)/ discrete i/o slave unit (rdx16d,rdy16tp,rdy16r)
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Also See for HIDIC EH-150:
- Applications manual (114 pages) ,
- Instruction manual (29 pages) ,
- Applications manual (20 pages)
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9.2
Link System Using EH-RMD
This section describes the differences in how the link area is used in the H series CPU link module and in the
EH-RMD.
PLC1
link area
(Transmission)
(Reception)
(Reception)
(Reception)
(PLC1 transmission)
(PLC2 transmission)
(PLC3 transmission)
Transmission
(PLC4 transmission)
area
(Same set as above)
(Same set as above)
WL200
Reception
area
Copy by the user
program of PLC1.
Master
PLC2
link area
(Reception)
(Transmission)
(Reception)
(Reception)
Figure 9.3 Link area in the H series CPU link
PLC1(Master)
link area
(PLC2 transmission)
(PLC1 transmission)
(PLC2 transmission)
(PLC2 transmission)
(PLC3 transmission)
(PLC3 transmission)
(PLC4 transmission)
(PLC4 transmission)
Figure 9.4 Link system using the slave mode
PLC3
link area
(Reception)
(Reception)
(Transmission)
(Reception)
PLC2(Slave)
PLC3(Slave)
link area
(PLC3 transmission)
(PLC1 transmission)
(PLC2 transmission)
(PLC3 transmission)
(PLC4 transmission)
Slave
9-2
Chapter 9 Slave Mode
PLC4
link area
(Reception)
(Reception)
(Reception)
(Transmission)
PLC4(Slave)
link area
link area
(PLC4 transmission)
(PLC1 transmission)
(PLC2 transmission)
(PLC3 transmission)
(PLC4 transmission)
Slave
Slave
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