Lighthouse Remote 2014P, Руководство по эксплуатации

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Programming
248083408-1 Rev 1 4-5
RS-485 Port
The RJ-45 connector on the instrument’s RS-485 port has both RS-232
and RS-485 lines. The pinouts are as shown in Table 4-3:
A standard Cat5 cable is used to connect the instrument to an RS485
network.
RS-485 Communications
WARNING:
Contact
Lighthouse Technical
Support for the correct
instrument configuration
BEFORE attempting to use
RS485 COM mode with a
PC. Failure to heed this
warning can result in
damage to PC, instrument
or both.
The instrument can use RS485 MODBUS as one of its communication
modes. Attaching the instrument to an RS485 network requires special
attention to topology (wiring scheme of network) before and after the
design phase to make sure the REMOTE P and other instruments
perform as expected.
The REMOTE P does not support a daisy-chain configuration and must
be used in a "star" or hub-based configuration on the network. If the
topology is unknown or the user is unsure how it should be installed,
please contact Lighthouse before installation.
WARNING:
If using
the REMOTE P RS-485
port, DO NOT connect
the cable to a system
Ethernet port.
A standard Cat5/Cat6 cable is used to connect the instrument to an
RS485 network. The pinouts are shown inTable 4-3.
In order to use the RS-485 MODBUS protocol, ensure that DIP Switch
8 is set to 0 (OFF).
Table 4-3 RS-232/485 IN Port Pinouts
RJ-45 Pin Signal Name
1 RS-232-TX
2 RS-232 RX
3 RESERVED for future use
4 RS-485B
5 RS-485A
6 RESERVED for future use
7 RESERVED for future use
8 GND