Heraeus 6000 Serie Instrucciones De Uso página 69

Eurotherm Controller with Interface RS 485
Assignment of the 25-pin D-Sub socket:
13 1
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25
L
14
Pin 1 Shield
2 ( connected to 12 )
3 Tx + ( transmission + )
4 ( connected to 5 )
5 ( connected to 4 )
6 < connected to 8 and 20 )
7 COM ( common, ground)
8 ( connected to 6 and 20 )
12 Rx + ( reception + )
13 Rx - < reception - >
16 Tx - ( transmission - )
20 ( connected to 6 and 8)
All unlisted pins are not wired
Upon delivery of the unit, the controller address is set to 00, and the Baud rate to 9600.
For other addresses or other Baud rates, the controller must be reconfigured (see
operating instructions for the EUROTHERM controller).
Caution: In the case of some RS 422/485 interface cards for personal computers, it
may be necessary to change the polarity of the signals Rx and Tx. If the
controller does not respond to the computer in- terface, connect Rx+ of the
PC interface to Tx- of the controller, and Tx+ of the PC interface to Rx- of
the controller.
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