Spectrum Controls SLC 500, User Manual

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User’s Manual Pub. 0300181-07 Rev. A
Configuring the 1746sc-
CTR4/CTR8
This chapter explains how the module and the SLC processor communicate
through the processor’s I/O image tables. It also describes the module’s input
filter characteristics. Topics discussed include:
•
Module ID code.
•
Module addressing.
• Operating modes.
• Input configurations.
•
Gate modes.
•
Channel turn-on/turn-off/reconfiguration timing.
•
Response to slot disabling.
Section 3.1
Module ID Code
The module ID code is a unique number assigned to each type of 1746 I/O
module. The ID defines for the processor the type of I/O module and the number
of words used in the processor’s I/O image table. With APS software, use the
system I/O configuration display to manually enter the module ID when
assigning the slot number during the configuration. Do this by selecting (other)
from the list of modules on the system I/O configuration display and enter 10200
as the ID code for the 1746sc-CTR4 and 10401 as the ID code for the 1746sc-
CTR8.
No special I/O configuration (SPIO CONFIG) is required. The module ID
automatically assigns the correct number of input and output words.
If you are using different programming software package, refer to the
documentation that came with your software.
Section 3.2
Module Addressing
The CTR-8 module uses 32 input and 32 output registers, and the CTR-4 module
uses 16 input and 16 output registers. Both modules use Class III mode operation
and cannot be used with Class I operation. The following memory map shows
you how the SLC processor’s output and input tables are defined for the module.
The SLC 5/01 processor does not support Class III operation and is not
compatible with this module. This module is not suitable for use in remote rack
applications with ASB modules due to the input / output word size. The
following memory map shows you how the SLC processor’s output and input
tables are defined for the module.