1 I/O bus (10 pins, female) to electrically connect the first terminal unit
2 Plug (1x 50 pins and 2x 57 pins) to electrically connect the inserted communication interface
module
3 With a screwdriver, inserted in this place, the terminal unit and the adjacent terminal unit can
be shoved from each other
4 2 holes for wall mounting
5 D-sub 9 (female) for connection with the PROFIBUS network
6 30 terminals for signals and process supply voltages (UP and UP3)
7 DIN rail
The communication interface modules plug into the terminal unit. When properly plugged-in,
they are secured with two mechanical locks. All the electrical connections are established via
the terminal unit, which allows removal and replacement of the communication interface mod-
ules without disturbing the wiring at the terminal unit.
The terminal units TU509 and TU510 are specifically designed for use with AC500/S500 com-
munication interface modules (e. g. CI451-DP).
Terminal Units (AC500 Standard) > TU509 and TU510 for Communication Interface Modules
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