PLC Applications - Traffic Signal Control | 34-402 |
This simple sequence application allows traffic light control of a cross-roads to be implemented on a timed sequence basis. The control program can be further developed to cope with interrupts gener- ated from pedestrian crossing requests or off-peak vehicle detector inputs. The units use 5V TTL signals and can be interfaced to a PLC using standard 24V dc logical inputs. A PLC interface is required to operate the above units (34-403).
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