SBC PCD3 Series - Page 129

Saia-Burgess Controls AG
Hardware manual for PCD3 series │ Document 26-789 ENG19│ 2018-06-29
Appendix
A
A-5
Denitionsfortheserialinterfaces
RS-485 wiring
Dependingonthemanufacturer,therearedi󰀨erentnamesfortheconnection
allocation.
Converter
Products from other manufacturers (RS-232 - RS-485) are usually presented in
reverse. Therefore, the data lines must be crossed in certain cases.
Converter PCD
Rx-Tx /Rx-/Tx/
/Rx-/Tx/ Rx-Tx

 Colour PCD7.T160 D-Sub 9-pin on PCD Port 2 on PCD3.M3 and M6
A=RxD /TxD-N green D pin 8 D
B=RxD /TxD-P red D/ pin 3 /D
Not all manufacturers use the same connection allocation, therefore the data lines
must be crossed in certain cases.
To guarantee an error-free operation of an RS-485 network, the network must be
terminated at both ends. Cables and terminating resistors should be selected in
accordance with manual section 26/740 Installation of components for RS-485
networks.
The drivers work with 5 VDC. If a higher voltage is applied, the drivers may be
destroyed!