Technical Description: Control Electronics
Issue 2
61
Part No. 306-0430-102
CON_LAN (
9
) is a serial communications port (COM2). The logic level signals at this connector are converted by the
optional expansion card for use with a modem, 20 mA current loop or RS485 interface.
Pin No. Signal Function Pin No. Signal Function
1 +15 V +15 VDC power 5 DTR Data terminal ready
2 VCC +5 VDC power 6 0 V Common
3 RXDB Receive data 7 RXDB Receive data (via inverter)
4 TXDB Transmit data 8 TXDB Transmit data (via inverter)
Notes: Pins 7 and 8 of the CPU CON_LAN serial port are for use with a modem.
Link W3 (8) must be fitted if COM2 is to be used with the optional expansion card and internal
modem.
Link W3 must be removed if COM2 is to be used with the expansion card 20 mA current loop or
RS485 interface.
Table 10 CPU CON_LAN Serial Port
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