2-5
2 Nomenclature and Installation
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
2-1 Unit Components
2
2-1-4 PROFIBUS Connector
The signal RTS (TTL signal) is for the direction control of repeaters, which do not have a self-controlling
capability.
The signals DGND and VP are used to power the bus terminator located in the cable connector.
Note 1 The orientation of the sub-D connector allows the use of PROFIBUS connectors with a 90°
angle cable outlet, e.g ERNI, Delconec and Phoenix.
2 The 9-pin sub-D connector uses #4/40 UNC thread, for mechanical fixation of the cable con-
nector. Make sure that if non-standard PROFIBUS connectors are used, the corresponding
thread is used on the cable connector.
8 RxD/TxD-N Receive/Transmit data - minus (A wire)
9--
Pin No. Signal Description
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