Page
32
AN-X4-ABRIO-SCAN
Nov 2023
Offset
Bit
Description
4-15
Reserved
1
0-15
Reserved (Pad for 32 bit alignment)
2-9
0-15
Discrete output data
The discrete write structure for a rack consists of 2 control words and 8 words of discrete output data.
Bits 0-3 of the first word of control data are used to inhibit racks. Set bit 0 to inhibit the scan of the
rack starting at I/O group 0; set bit 1 to inhibit the scan of the rack starting at I/O group 2; and so on.
Inhibiting a rack stops all communications with that rack and all outputs revert to their programed
state.
Only the bit for the starting I/O group need to be set to inhibit the rack. For example, if a rack is a full
rack starting at I/O group 0, only bit 0 needs to be set to inhibit the scan of the rack.
Words 2-9 contain the discrete output data for the rack. Words 2 and 3 contain the data for I/O groups
0 and 1 (first ¼ rack), words 3 and 4 contain the data for I/O groups 2 and 3 (second ¼ rack), and so
on.
Refer to page 36 for information on the aliases the configuration program creates for the discrete data.
Example aliases for discrete output data, rack 0 is a quarter rack starting I/O group 0
ALIAS,"","RIO_R00_CTL","Rack-00 Control","","NoName:0:O.Data[0]"
ALIAS,"","RIO_O000","Rack-00 Grp-0 Discrete Output","","NoName:0:O.Data[2]"
ALIAS,"","RIO_O001","Rack-00 Grp-1 Discrete Output","","NoName:0:O.Data[3]"
ALIAS,"","RIO_O002","Rack-00 Grp-2 Discrete Output","","NoName:0:O.Data[4]"
ALIAS,"","RIO_O003","Rack-00 Grp-3 Discrete Output","","NoName:0:O.Data[5]"
Block Transfer Modules
The tables show the structures that get mapped to ControlLogix scheduled input or output data when
you map a block transfer module.
Even if a module has only a block transfer read or a block transfer write, you should always map the
module to both scheduled input and output data, so that the control and status data gets mapped.
BT Read Structure
Offset
Bit
Description
0
0-7
BTR Update Counter (increments each time BTR executes, range 0-255)
8-10
BTR Error Code
11
BTR.ERR, block transfer read error bit, see table of error codes
12
BTR.DN, block transfer read done (manual mode only)
13-15
Reserved
1
0-7
BTW Update Counter (increments each time BTW executes, range 0-255)
8-10
BTW Error Code, see table of error codes
11
BTW.ERR, block transfer write error bit
Содержание AN-X4-ABRIO-SCAN
Страница 1: ...AN X4 ABRIO SCAN Remote I O Scanner Module User Manual...
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