Thermo Ramsey - Hoferick Engineering GmbH

Operation
Table 2-9: Speed Input Jumpers
2-14
Select the jumper positions for the desired communication standard (see Section
2.5.4). Refer to Table 2-4 for jumper locations.
1. Wire to the Terminal Block 3 on the motherboard for the communication
standard selected, RS-485, RS-232c, 20 mA current loop.
2. Refer to REC 3949, Chapter 3 for the remainder of the communication
setup.
Table 2-10: Motherboard COMM 1 Communications Wiring Configuration - TB3 – RS-485
Motherboard
RS-485 Communications
TB 3
25 Shield
29 -RX
28 +Rx
24 Common
21 +TX
20 -TX
Maximum cable length 4000 ft
Use Beldon 9830 or equivalent
SPEED INPUT JUMPERS
Mode OP5
60-12 Series “A” DEFAULT
Dry Contact “B”
Operation Thermo Fisher Scientific
REC 4175 Rev B