Rockwell Automation 1732E-OF4M12R ArmorBlock Dual-Port EtherNet/IP 4-Point Analog Input/Output - Manual (Page 56)

48 Rockwell Automation Publication 1732E-UM005A-EN-E - July 2012
Chapter 4 Configurable Features for the Analog Input and Output Modules
outside that range. This safety feature sets a high clamp and a low clamp. Once
clamps are determined for a module, any data received from the controller that
exceeds those clamps sets an appropriate limit alarm and transitions the output to
that limit but not beyond the requested value.
For example, an application may set the high clamp on a module for 8V and the
low clamp for -8V. If a controller sends a value corresponding to 9V to the
module, the module will only apply 8V to its screw terminals.
Clamping alarms can be disabled or latched on a per channel basis.
To set clamping limits via RSLogix 5000, go to page 36 .
Clamp/Limit Alarms
This function works directly with clamping. When a module receives a data value
from the controller that exceeds clamping limits, it applies signal values to the
clamping limit but also sends a status bit to the controller notifying it that the
value sent exceeds the clamping limits.
Using the example above, if a module has clamping limits of 8V and -8V but then
receives data to apply 9V, only 8V is applied to the screw terminals and the
module sends a status bit back to the controller informing it that the 9V value
exceeds the module’s clamping limits.
To set clamping alarms via RSLogix 5000, go to page 36 .
Data Tables The data structure of each Assembly instance used by the Analog Input and
Output modules is defined in the tables below.
1732E-IF4M12R – Configuration Assembly Instance 100 Data Structure
Configuration
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
4…5 Channel 0 Low Engineering
6…7 Channel 0 High Engineering
8…9 Channel 0 Digital Filter
10…11 Channel 0 Low Alarm
12…13 Channel 0 High Alarm
14…15 Channel 0 Low Low Alarm
16…17 Channel 0 High High Alarm
18 Channel 0 Input Range
19 Channel 0 Enable Alarm Latch
20 Channel 0 Disable Alarms
21…23 Reserved (Ignore)
24…25 Channel 1 Low Engineering