Command Interface; Command Interface Timing Diagram - Graco InvisiPac HM10 Instructions Manual

Command Interface

This section provides details about the CGM Command Interface.
The command interface portion of the map, allows the user to request further information or control more
parameters of the InvisiPak system, which are not part of the other assigned memory locations. The command
interface variables are assigned instance locations 40, 41, 61, 62 and 63 outlined in the Automation Inputs, page
60 and Automation Outputs, page 49.
The Command Interface Timing Diagram along with the Command Interface Read operation, should be used in
order to read/write the command interface variables.
NOTE: When changes are made using the Command Interface, the ADM screen may not update immediately. It
may be necessary to navigate to another screen, then back to the original screen.

Command Interface Timing Diagram

Automation Outputs
(InvisiPac Inputs)
Command Interface-
Command Bytes
Command Interface-
Value Bytes
Command Interface-
Control Bits Write
(bit 0)
Command Interface-
Control Bits Read
(bit 1)
Automation Inputs
(InvisiPac Inputs)
Command Interface-
Value Bytes
Command Interface-
Status Bits - Active (bit 0)
Command Interface-
Status Bits - Success (bit 1)
Command Interface-
Status Bits - Failure (bit 2)
Command Interface-
Status Bits - Value Coerced
(bit 3)
Command Interface Read operation
1. Set Command Interface - Command ID Byte to the desired value. See Command Interface Table page 66 for
available values.
2. Set Command Interface - Control - Read Bit (bit 0).
3. Wait for the Command Interface - Status bits Active (bit 0) to become set.
3A7259C
Read Command
Bytes Set
Bytes Set
Communications Gateway Module (CGM)
Write Command
Bytes Set
Bytes Set
Bytes Set
65