APPENDICES
Appendix 4 Comparison between CC-Link IE controller network and MELSECNET/H
Appendix 4.5 Precautions for program replacement
App
- 69
9
DE
DICA
T
E
D
INS
T
RUCT
IONS
10
T
R
OUB
L
E
S
HO
OT
IN
G
APPENDI
CES
INDEX
Appendix 4.5
Precautions for program replacement
Existing sequence programs for the MELSECNET/H can be utilized for the
CC-Link IE controller network.
In such a case, however, note the following precautions.
(1) Changing link special relays (SB) and link special registers (SW)
(a) Some link special relays (SB) and link special registers (SW) used for the
MELSECNET/H have been changed for the CC-Link IE controller network.
Verify the link special relays (SB) and link special registers (SW).
Appendix 4.3 Link special relays (SB) and link special registers (SW)
(b) Example of program replacement
The following example is an interlock for communication program which uses the
cyclic transmission status of own station (host) and the cyclic transmission status
of station No.2.
Figure App.5 Example of replacing interlock program for cyclic communication
MELSECNET/H
SB0047: Baton pass status of host
SB0049: Data link status of host
SW0070: Baton pass status of each station
SW0074: Cyclic transmission status of each station
Communication program with Station No.2
SB0020: Module status
CC-Link IE controller network
SB0047: Baton pass status of own station
SB0049: Data link status of own station
SW00A0: Baton pass status of each station
SW00B0: Cyclic transmission status of each station
Communication program with Station No.2
SB0020: Module status
Содержание QJ71GP21-SX
Страница 1: ......
Страница 2: ......
Страница 644: ...App 94 Appendix 6 External Dimensions Appendix 6 2 QJ71GP21S SX APPENDICES Memo ...
Страница 649: ......
Страница 650: ......