PEAK® IOM57 Input/Output Modules Installation Instructions
16
Refer to the
MS/TP Communications Bus Technical Bulletin (LIT-12011034)
for more information on controller
device addresses and how to set them on MS/TP buses.
Removing the controller cover
The controller cover is held in place with four plastic latches that extend from the base and snap into slots on the
inside of the housing cover.
To remove the controller cover, complete the following steps:
1. Place your fingernails under the two cover lift tabs on the sides of the housing cover and gently pry the top of
the cover away from the base to release the cover from the two upper latches. See Figure 2 for information
about the controller.
2. Pivot the top of the cover further to release it from the lower two latches.
3. Replace the cover by placing it squarely over the base, and then gently and evenly push the cover on to the
latches until they snap into the latched position.
UI current loop jumpers for IOM5711
The current loop fail-safe jumpers are on the circuit board under the controller cover near the UI terminals. When a
UI is defined in the system software as a 4 to 20 mA analog input and the UI’s current loop jumper is in the default
disabled position, the 4 to 20 mA current loop circuit opens whenever power to the controller is interrupted or off.
The following figure shows this setup
4 to 127
(Switch 128 Off)
Used for MS/TP master devices (controllers) that are hardwired to an SA bus or FC bus.
0 to 3
(Switch 128 ON)
Reserved addresses for wired subordinate devices (not for use on controllers)
Note:
PEAK controllers ship with switch 128 ON and the remaining address switches off rendering the
controllers wired subordinate devices, which do not operate on MS/TP buses.
4 to 127
(Switch 128 ON)
Valid for MS/TP Master controllers on wireless FC buses only.
Note:
Do not connect a controller with switch 128 ON to an active, hard-wired SA or FC bus. When a
controller with switch 128 ON and a device address from 4 to 127 is connected to a wired field bus, the
entire field bus is rendered inoperable until the controller is disconnected or switch 128 is set to OFF.
IMPORTANT:
Electrostatic discharge can damage controller components. Use proper electrostatic discharge
precautions during installation, setup, and servicing to avoid damaging the controller.
IMPORTANT:
Disconnect all power sources to the controller before you remove the cover and change the
position of any jumper or the EOL switch on the controller. Failure to disconnect power before changing a jumper
or EOL switch position can result in damage to the controller and void any warranties.
Table 7: SA/FC bus device address descriptions (Part 2 of 2)
Device address
Use on description
Figure 10: Current loop jumper positions
Jumper
Pins
FI
G
:A
na
_J
m
pr
Top of
Control
Jumper positioned
on pins 2 and 3.
Disabled
(Default)
Jumper positioned
on pins 1 and 2.
Enabled
1 2
3
Jumper Positions
Viewed from the
Bottom of IOM
1 2 3
1 2 3
