Rockwell Automation 1738-IJM23 ArmorPOINT I/O 5V DC Encoder/Counter Modules, Series A - Manual (Page 8)

Publication 1738-IN012B-EN-E - August 2013
8 ArmorPOINT I/O 5V DC Encoder/Counter Module, Series A
Communicate With
Your Module
I/O messages are sent to (consumed) and received from (produced) the
ArmorPOINT I/O modules. These messages are mapped into the processor’s
memory. This ArmorPOINT I/O input/output module produces 6 or 10
bytes of input data (scanner Rx - status). It consumes 1 byte of I/O data
(scanner Tx). See the 1738 ArmorPOINT adapter User Manual, publication
1734-UM016 , for specific parameter information.
Default Data Map for the ArmorPOINT Encoder/Counter Module
Message size: 6 or 10 Byte
s
Note that when a configuration is sent to the module, it is checked for
consistency before being applied. If an error is found in the configuration, the
PE bit is asserted and the module retains its previous configuration. Monitor
this PE bit with your user program to isolate any problems an improperly
configured module may have. If the configuration is considered acceptable, the
counter ASIC is disabled and counting is suspended while the ASIC is loaded
with the new operational parameters.
Message size: 1 Byte
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Produces
(Scanner Rx) Channel 0 value of present counter state (LSW)
Channel 0 value of present counter state (MSW)
P
E
E
F
N
R 0 O O O O 0 Z
S B
S A
S C
1 C
0 Z
D 0
Requested Poll Produce Assembly
Requested Change of State Produce Assembly
Where: PE = Programming error
EF = EEPROM fault status
NR = Not ready status bit
ZS = Z input status
BS = B input status
AS = A input status
C = Stored data count
ZD = Zero frequency detected
LSW = Least significant word
MSW = Most significant word
07 06 05 04 03 02 01 00
Consumes
(scanner Tx)
0 0 0 0 0 VR CP CR
Where: VR = Value reset of stored/accumulated count
CP = Counter preset
CR = Counter reset