Summary Of Rs-485 Commands - HELIX GRANVILLE-PHILLIPS Convectron ATM Instruction Manual

4.13 Summary of RS–485
commands
Table 4-12 Process control, calibration, and set commands
Type Description
Process control commands
PCG Assign relays to vacuum chamber pressure or differential pressure
PC1A Set pressure at which relay 1 activates
PC1D Set pressure at which relay 1 deactivates
PC2A Set pressure at which relay 2 activates
PC2D Set pressure at which relay 2 deactivates
PC3A Set pressure at which relay 3 activates
PC3D Set pressure at which relay 3 deactivates
PC4A Set pressure at which relay 4 activates
PC4D Set pressure at which relay 4 deactivates
PC1O Set relay 1 to OFF (disabled) state
PC2O Set relay 2 to OFF (disabled) state
PC3O Set relay 3 to OFF (disabled) state
PC4O Set relay 4 to OFF (disabled) state
Calibration commands
TS Calibrate Convectron gauge at atmospheric pressure
TZ Calibrate Convectron gauge at vacuum chamber pressure
TO Calibrate differential pressure sensor zero
Set commands
SB Set baud rate
SPE Set parity to 7 data bits, even parity
SPO Set parity to 7 data bits, odd parity
SPN Set parity to 8 data bits, no parity
SUT Set pressure measurement unit to Torr
SUM Set pressure measurement unit to mBar
SUP Set pressure measurement unit to Pa
SDC Set optional display to Convectron gauge pressure
SDD Set optional display to differential pressure
(1) In all commands, "X" represents an alpha or numeric character. Some characters are always numeric.
(2) Include + or – sign only if relay is assigned to differential pressure (see page 52).
®
Convectron ATM Vacuum Gauge Module Instruction Manual
• Table 4-12, below, summarizes process control, send, and calibration
commands.
• Table 4-13 on page 60 summarizes read commands.
RS–485 Module Operation
Structure (1)
#XXPCGXXXX ↵
#XXPC1A+X.XXE–0X ↵
(2)
#XXPC1D+X.XXE–0X ↵
(2)
#XXPC2A–X.XXE+0X ↵
(2)
#XXPC2D–X.XXE+0X ↵
(2)
#XXPC3A+X.XXE–0X ↵
(2)
#XXPC3D+X.XXE–0X ↵
(2)
#XXPC4A–X.XXE+0X ↵
(2)
#XXPC4D–X.XXE+0X ↵
(2)
#XXPC1O ↵
#XXPC2O ↵
#XXPC3O ↵
#XXPC4O ↵
#XXTS ↵
#XXTZ ↵
#XXTO ↵
#XXSBXXXX(X) ↵
#XXSPE ↵
#XXSPO ↵
#XXSPN ↵
#XXSUT ↵
#XXSUM ↵
#XXSUP ↵
#XXSDC ↵
#XXSDD ↵
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