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CHAPTER 8 PROGRAMMING
8
8.3 Using Link Special Relay (SB) and Link Special Register (SW)
(11)Checking the status of communications between a CC-Link IE Controller
Network module and a CPU module
The status of communications between a CC-Link IE Controller Network module and a CPU module can be
checked with link special relay (SB) and link special register (SW). ( Page 526, Section 10.3)
1. If an error occurs in communications between a CC-Link IE Controller Network module and a CPU
module, Module status (SB0020) is turned ON.
2. An error code is stored in Module status (SW0020).
(12)Checking the external power supply status
The external power supply status can be checked not only by CC IE Control diagnostics but also with the link
special relay (SB) and link special register (SW). ( Page 526, Section 10.3)
(a) Checking external power supply status of other stations
1. When external power is supplied to a station, External power supply information (SB0180) turns
ON.
The station No. of the station where external power is supplied is stored in Power supply status of
each station (SW0180 to SW0187).
2. If external power is not supplied to any CC-Link IE Controller Network module with external power
supply function, Power status consistency check of each station (SB0190) turns ON.
The station No. of the station where external power is not supplied is stored in Power status
consistency check of each station (SW0190 to SW0197).
(b) Checking external power supply status of own station
While external power is supplied, Own station power status (SB0042) is ON.
No. Description No. Description
SB0020 Module status SW0020 Module status
No. Description No. Description
SB0180 External power supply information
SW0180 to
SW0187
Power supply status of each station
SB0190 Power status consistency check of each station
SW0190 to
SW0197
Power status consistency check of each station
No. Description No. Description
SB0042 Own station power status —
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