Rockwell Automation 5370 CVIM Communications Manual - Manual (Page 154)

Appendix B
Discrete Bit Results
B–9
There are 128 bits that can be set as outputs from a host device to control the
operation of the CVIM. These bits control:
•
Monitor display.
•
Camera trigger.
•
Toolset selection.
•
I/O forcing.
•
Selection of operation after reject.
•
Memory storage location. RAM, EEPROM, RAM Card, or external host
memory.
Refer to Tables B.2 and B.3. Table B.2 only applies to Backplane
communications. Table B.3 applies to both Backplane and Remote I/O
communications.
Table B.2
Backplane Handshake Bits
Word #
PI
Backplane
RS–232
and
Remote
I/O
Bit #
PI
Definition Usage Notes
0 N/A 0 Host Data Lock –
Toolset #1
0 = CVIM May Write
1 = CVIM Write Inhibited The backplane host should write to bit 0 to prevent
the CVIM from modifying toolset 1 results data.
0 N/A 1 Host Data Lock –
Toolset #2
0 = CVIM May Write
1 = CVIM Write Inhibited The backplane host should write to bit 1 to prevent
the CVIM from modifying Toolset 2 results data.
0 N/A 2 CVIM Data Lock –
Toolset #1
0 = CVIM Not Writing
1 = CVIM Writing The CVIM sets bit 2 while writing to Toolset 1. The
bit will be set back to 0 after writing.
0 N/A 3 CVIM Data Lock –
Toolset #2
0 = CVIM Not Writing
1 = CVIM Writing The CVIM sets bit 3 while writing while writing to
Toolset 2. The bit will be set back to 0 after writing.
0 N/A 4–15 Reserved
Discrete Bit Outputs