3M Dynapro ET 3170 Terminal Series B, Installation Manual

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3M Touch Systems Proprietary Information
3
CHAPTER 2
Setting jumpers
About this chapter
This chapter explains how to:
!
Set jumpers on the logic board for RS-232, RS-422, and RS-485
communications. To be sure that you have the correct version of the logic
board, check the series number of the terminal, as described in “What it’s
about” on page 1.
!
Set jumpers on the I/O filter board to add 100 ohm termination resistors
across the TX+, TX- or RX+, RX- signal lines.
Tools required
You will need the following tools:
!
5/32-inch Allen key
!
Needle nose pliers
!
No. 2 Phillips torque screwdriver
Setting jumpers on the logic board
This procedure is only necessary if you wish to switch the jumper on the logic
board from the RS-232 header (the default) to the RS-422 or the
RS-485 headers.
WARNING
To reduce the risks associated with electrical shock or fire which, if not avoided,
could result in death or serious injury and/or property damage:
n
To ensure compliance with electrical codes and safe operation of the ET unit, have a
licensed journeyman electrician familiar with local codes perform all wiring tasks.