Graco 3A2098H Command Interface Timing Diagram, Command Interface Read Operation

Appendix C - Communications Gateway Module (CGM) Connection Details

Command Interface Timing Diagram

	Write Command	Read Command
Automation Outputs (PCF Inputs)
Command Bits 256-275	Bits Set	Bits Set
Value Bits 288-319	Bits Set
Write Bit 321
Read Bit 320
Automation Inputs (PCF Outputs)
Value Bits 128-159	Bits Set	Bits Set
Command Active Bit 160
Command Success Bit 161
Command Failure Bit 162
Command Value Coerced Bit 163

FIG. 73: CGM Command Interface Timing Diagram

Command Interface Write Operation

1.Set Command Identification Bits and Fluid Plate/Swirl Identification Bits to the desired values.

2.Set Value Bits (Output) with the value that is desired to be written.

3.Set Write Bit.

4.Wait for the Command Active Bit to become set. This indicates that an operation is in process.

5.Wait for the Command Success Bit, Command Fail- ure Bit, or Command Value Coerced Bit to become set.

NOTE: The Value Bits (Input) now contain the value that was actually written.

6.Clear the Write Bit to end the write command opera- tion.

Command Interface Read Operation

4.Wait for the Command Success Bit or Command Failure Bit to become set.

NOTE: If Command Success Bit has been set, valid data will be present within the Value Bits (Input).

5.Clear the Read Bit to end the read command opera- tion.

Fluid Plate/Swirl Identification Commands

Output Bits 268-275	Description
0xB0	Fluid Plate 1
0xB1	Fluid Plate 2
0xB2	Fluid Plate 3
0xB3	Fluid Plate 4
0xE1	Swirl 1
0xE2	Swirl 2
0xE3	Swirl 3
0xE4	Swirl 4

Fluid Plate Commands

1.Set Command Identification Bits and Fluid Plate/Swirl Identification Bits to the desired values.

2.Set Read Bit.

3.Wait for the Command Active Bit to become set. This indicates that an operation is in process.

Output		Units
Bits		*See Units	Read or
256-267	Description	Definitions, page 137	Write
0x004	Software Part	STR_3_0	Read Only
	Number
0x005	Software Part	STR_7_4	Read Only
	Number
0x006	Software Part	STR_11_8	Read Only
	Number

132 3A2098H