Spectrum Controls 140 ACI 052 00sc - Manual (Page 34)

Bit 8: Channels 1-4
Bit 7: Channels 5-8
Bit 6: Channels 9-12
Bit 5: Channels 13-16
Bit 4: Channels 17-20
Bit 3: Channels 21-24
Bit 2: Channels 25-28
Bit 1: Channels 29-32
4x Reserved: Bit 9
Bit 9 is reserved. Bit 9 should be set to a “0.”
4x Autosequence Disable: Bit 10
When Autosequence Disable is active (Bit 10=1), the module reads only the
eight channels identified by the Group Select Bits. If Autosequence Disable
is inactive (Bit 10=0), the Autosequence mode will be in effect. When in
autosequence mode, the module ignores the channel group select in the 4x+0
configuration word, and instead sequences through all four groups automatically.
The values in the eight data registers belong to the group identified in the
status word group ID (3x+9 bits 15 and 16). The user must set aside 32
registers as a permanent image of the channel data. During run time, the
ladder need only determine the current group for the eight data registers (3x+0
through 3x+7) in order to determine where the data should be copied into the
32 register channel image.
When autosequence is disabled, the user must manually increment the group
select in the configuration word and the module sends back only the data
requested.
Sample ladder logic for both techniques is provided in section 6.3.
4x Data Input Mode: Bits 11, 12
The module continuously outputs a group of eight registers worth of data.
The data for a given group can be paged between three modes. These are the
standard channel input data, channel status data or Time stamp data.
Bit 1 Bit 2 Input Modes
0 0 Data
0 1 Status
1 0 Time Stamp
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Installation Instructions
32-Channel Analog Input Module
Quantum Series 140 ACI 052 00sc