Halma ALICAT SCIENTIFIC M Series, Руководство по эксплуатации

Страница: 35 / 47

Modbus RTU
January 2023 • Rev. 0 • Standard Devices User Manual
35
Special Commands and Arguments
Devices
Command Argument
(Register 1001)
Command ID
(Register 1000) Command Name
Mass Flow Gas Table Index 1 Change Gas Number
Mass Flow Gas mixture index (236–255)
or 0 to use next available.
2 Create Custom Gas Mixture
Mass Flow Gas mixture index 3 Delete Custom Gas Mixture
All 0: Pressure
1: Absolute Pressure
2: Volume (Mass Flow and Liquid Devices)
4 Tare
Mass Flow and Liquid 0: Reset totalizer 5 Reset Totalizer Value
Controllers 0: Cancel
1: Hold Close
2: Hold Current
3: Exhaust (Dual valve controllers)
6 Valve Setting
All 0: Unlock
1: Lock
7 Display Lock
Controllers 0–65535 8 Change P in PID Loop
Controllers 0–65535 9 Change D in PID Loop
Controllers 0–65535 10 Change I in PID Loop
0: Mass Flow Controllers
1: Mass Flow and Liquid Controllers
2: PSID Controllers
3: Abs Press Controllers and Mass Flow Controllers
4: Gauge Pressure Controllers, Mass Flow
Controllers with barometer, Liquid Controllers
0: Control Mass Flow
1: Control Volumetric Flow
2: Differential Pressure
3: Absolute Pressure
4: Gauge Pressure
11 Change Control Loop Variable
Controllers 0: Save setpoint for power-up 12 Save Current Setpoint
to Memory
Controllers 1: PD
2: PDDI
13 Change Loop Control
Algorithm
Controllers 0: PID P
1: PID D
2: PID I
14 Read PID Value
All 1–247 = New ID 32767 Change Modbus ID
Special Command Result Status Codes
Result Status Code
Success 0
Invalid command ID 32769
Invalid setting 32770
Requested feature is unsupported 32771
Invalid Gas Mix Index (Mass Flow Devices) 32772
Invalid Gas Mix Constituent (Mass Flow Devices) 32773
Invalid Gas Mix Percentage (Mass Flow Devices) 32774