MKS 937B - Description of the System Setup Parameters

MKS 937B Operation Manual
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6.4.4 Description of the system setup parameters
1. Pressure unit
This determines the units used for the pressure displayed on the front panel, the
pressure queried from serial communication, and the pressure setpoint. There are
four choices: Torr, mBar, Pascal, and Microns. The default value is Torr.
2. Communication Type
This sets the Serial communication protocol, either RS232 or RS485. Default value is
RS232.
When the serial communication protocol is changed, the power of the 937B controller
must be reset for the change to take effect.
3. Address
This is the address for RS485 communication. The valid range is from 1 to 254. The
default value is 253. 254 is reserved for broadcasting only.
4. Baud Rate
This sets the baud rate for serial communication. Valid values are 9600, 19200,
38400, 57600, 1152000. The default value is 9600.
5. Command Mode
This allows the use of either new 937B or old 937A serial communication protocols.
The default setting is 937B. When 937A is selected, 937A software can communicate
with the 937B controller.
6. User Calibration
When User Calibration is disabled, the following commands cannot be executed
through the keypad or through serial communications:
CC User Calibration
HC User Calibration and sensitivity
PR/CP Factory default, Manual Zero, and Manual ATM
CM & FC Factory default and Manual Zero
7. Set Parameter
When Set Parameter is disabled, none of the channel setup commands can be
executed. However, these values can still be viewed from the display, or queried
using serial communication:
CC Gas Type
User Calibration
AO delay
Protect setpoint
Relay direction, setpoint and hysteresis
Control setpoint Channel, setpoint and hysteresis
HC Gas Type
Degas time