MKS Granville-Phillips 358 series, Instruction Manual

Page: 92 / 122

Chapter 5
92
Series 358 Micro-Ion Controller Instruction Manual - 358013 - Rev. B
IG1
Definition: Turn the Ion gauge ON or OFF.
Modifiers: ON or OFF
Response: OK is command accepted, INVALID if
rejected.
Example:
From computer: #AAIG1 ON CR
From controller: OKCR
• The IG ON command will be rejected as INVALID if the Ion gauge is
already ON, and IG OFF will be rejected if the Ion gauge is already OFF.
• A response to the IG1 ON command of OK indicates only that a signal
requesting that the Ion gauge be turned ON has been sent to the
electrometer. The tube may fail to come on, e.g., if the system pressure is
too high or if the tube is disconnected. To verify that the Ion gauge is ON,
use the DS IG1 command. If the tube is OFF (or in its first few seconds of
operation after being turned ON) a pressure of 9.90E+9 will be returned.
IG2
Identical to IG1 - performs the same functions as IG1
PCS
Definition: Display process control channel status
Modifiers: 1 or 2 or 3 or 4 or 5 or 6 or B or none.
Response: Depends on modifier:
Single digit (1 through 6); response = single
ASCII digit, 0 if the corresponding relay is
inactive, 1 if active.
B; response = a byte of data with bit 0 through
5 set/clear according to whether the
corresponding relay is active/inactive. Bit 6
will always be set to guarantee that the
returned byte will not appear as a terminator
byte.
None or Absent; response will be a string of 6
ASCII zeroes and ones separated by commas,
giving the status of all six channels.