Publication 1762-RM001C-EN-P
Function Files 3-13
Communications Status
File
The Communications Status (CS) File is a read-only file that contains
information on how the controller communication parameters are
configured and status information on communications activity.
The communications status file uses:
There is one communications Status file for each communications port.
Communications Status File CS0 corresponds to Channel 0 on the
controller. Communications Status File CS1 corresponds to Channel 1 on
the 1764-LRP processor.
The data file is structured as:
The following tables show the details of each block in the
Communications Status File.
Table 3.9 Communications Status File Size
Controller Number of Word Elements
MicroLogix 1500 1764-LSP Series A Processor 44 1-word elements
MicroLogix 1200
MicroLogix 1500 1764-LSP Series B and 1764-LRP Processors
71 1-word elements
NOTE
You can use the Communications Status File information
as a troubleshooting tool for communications issues.
Table 3.10 Communications Status File
Word Description Applies to Controller Details
on Page
0 to 5 General Channel Status Block MicroLogix 1200 and 1500 3-14
6 to 22 DLL Diagnostic Counters Block MicroLogix 1200 and 1500 3-14
23 to 42 DLL Active Node Table Block MicroLogix 1200 and 1500 3-17
words 43 to 70 when using DF1 Full-Duplex, DF1 Half-Duplex, DH-485, or ASCII
(1)
:
(1) ASCII can only be used with the MicroLogix 1500 1764-LSP Series B and 1764-LRP Processors.
43 End of List Category Identifier Code
(always 0)
MicroLogix 1200 and 1500 --
43 to 70 Reserved
•
MicroLogix 1200
•
MicroLogix 1500 1764-LSP
Series B and 1764-LRP
Processors
--
words 43 to 70 when using Modbus RTU Slave:
43 to 69 Modbus Slave Diagnostic Counters Block
•
MicroLogix 1200
•
MicroLogix 1500 1764-LSP
Series B and 1764-LRP
Processors
3-18
70 End of List Category Identifier Code
(always 0)
•
MicroLogix 1200
•
MicroLogix 1500 1764-LSP
Series B and 1764-LRP
Processors
--
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