Rockwell Automation 1203-CN1 ControlNet Communications Module 1203-CN1 - Manual (Page 85)

Publication 1203-5.13 – February, 2002
Appendix
C
N-File Structure
Appendix Objectives Appendix C details the N-file structure in the 1203-CN1 module. The
N-files contain data for the 1203-CN1 module and the connected
SCANport product. If you need to access information in the product
using messages or program a PLC or PC, you will need to know what
data is stored in each N-file.
N-File Structure The following table lists the N-files and a description of each N-file’s
content.
N-File Description
N10:0 Number of SCANport Product Parameters
N10:1 – N10:999
N11:0 – N11:999
N12:0 – N12:999 SCANport Product Parameter Value Read/Write
(Parameters 1 – 2999)
N13:0 Number of 1203-CN1 Module Parameters
N13:1 – N13:999 1203-CN1 Module Parameter Value Read/Write
(Parameters 1 – 999)
N20:0 – N20:127 Status of last SCANport parameter write (into N10 – N19)
(0-good, 1 – 7 = SCANport error code)
If ten parameter values are written to N10 with a single
PCCC message, each of the first ten elements will contain a
status code for the respective SCANport write operation. If
twenty parameter values are written, the first twenty
elements of this file will contain these codes. It makes no
difference if the parameter write began at some element
other than 0 because the resulting status codes will still
begin at N20:0.
N30:1 – N30:999
N31:0 – N31:999
N32:0 – N32:999 SCANport Product Parameter Full/All Info Read
(Parameters 1 – 2999)
N33:1 – N33:999 1203-CN1 Module Parameter Full/All Info Read
(Parameters 1 – 999)
N40:0 – N40:63 Block Transfer Emulation
N42:6 Max Network Node (Read Only)
N42:7 1203-CN1 Module’s Port Number (Read Only)