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ISO 9001
EN 29001
Installation, Operating, and Maintenance Instructions
Series 64.1
VAT Vakuumventile AG, CH-9469 Haag, Schweiz
Tel ++41 81 771 61 61 Fax ++41 81 771 48 30 Email reception@vat.ch http://www.vatvalve.com
283681EB
2011-03-18
16/19
9.2.2 RS485 Communication
Control commands starting with ‘‘#000U:’ are accepted in REMOTE and LOCAL mode. All other control commands and
setup commands are accepted only, when the PM controller is in REMOTE mode.
Inquiry commands are accepted in REMOTE and LOCAL mode.
Control commands are acknowledged by one or two acknowledgements:
1st acknowledgement: Confirmation that command has been received, within a maximum of 40 ms
2nd acknowledgement: If enabled, confirmation that command has been executed
Logic inputs CLOSE and OPEN are executed in REMOTE and
LOCAL operation.
These signals have priority (CLOSE is higher than OPEN) and they are executed immediately
(see chapter ‚9.1.3 Connector for RS485 interface‘ for details)
9.2.3 RS485 Command structure
The RS485 command structure is as follows: #aaacccc
#: identification sign (ASCII 35)
aaa: device address of the controller (000 – 015)
cccc: standard RS232 command
Example for controller No.1, pressure setpoint corresponding 120/1000
Command = #001S:000120<CR><LF>
Answer = #001S: <CR><LF>
The complete command list is given in the following tables.
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