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Serial Interface Operation
D374-20-880 Issue E
5.4.2 Control command message (!C)
Send this command message to take or release control of the dry pumping system, as defined by the {0:1} character:
z If {0:1} = 0, release control.
z If {0:1} = 1, take control.
5.4.3 Gas ballast command message (!D)
Send this command message to control the operation of the gas ballast (if fitted), as follows:
z If {0:1} = 0, switch gas ballast off.
z If {0:1} = 1, switch gas ballast on.
5.4.4 Format mode command message (!D)
Send this command message to define the format of replies to query messages (refer to Section 5.3.1). The {0:1}
character defines the required length of replies, as follows:
z If {0:1} = 0, short replies are requested.
z If {0:1} = 1, long replies are requested.
5.4.5 Gate valve command message (!G)
Send this command message to control the operation of the gate valve (if fitted), as follows:
z If {0:1} = 0, close the gate valve.
z If {0:1} = 1, open the gate valve.
5.4.6 Load-lock pump command message (!L)
Send this command message to control the operation of the load-lock (if fitted), as follows:
z If {0:1} = 0, switch off the load-lock pump.
z If {0:1} = 1, switch on the load-lock pump.
Table 14 - Command Messages
Command Message Name Message Syntax
Control !C{0:1}<CR>
Gas ballast !D{0:1}<CR>
Format mode !F{0:1}<CR>
Gate valve !G{0:1}<CR>
Load-lock pump !L{0:1}<CR>
Simulation mode !M{0:1}<CR>
Nitrogen supply !N{0:1}<CR>
On process !O{0:1}<CR>
Pump !P{0:2}<CR>
Run til crash !R{0:1}<CR>
Inlet purge !U{0:1}<CR>
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