
VIPER Technical Manual | Connectors, LEDs and jumpers |
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RS485/422 configuration – LK4, LK5, LK6 and LK7 on JP1
VL
These jumpers are used to enable/disable the RS485 receive buffer and RS485/422
line termination. See COM5436H– RS422/485 interface, page 65437H, for more details.
LK4 Description(RS485 TX/RX) RS422 TX line | Default setting: |
termination resistor (120Ω) connected. |
(RS485 TX/RX) RS422 TX line termination resistor (120Ω) disconnected.
LK5 Description
RS422 RX line termination resistor (120Ω) connected.
RS422 RX line termination resistor (120Ω) disconnected.
LK6 & LK7 DescriptionRS422
Default setting:
Default setting:
RS485
Only fit LK4 and LK5 if the VIPER is at the end of the network.
© 2007 Eurotech Ltd Issue E | 99 |