A735-01-860 Issue A
Page ii © Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
Illustrations
Figure Page
1 Start / Stop Control Diagram ........................................................................................... 1
2 nXDS scroll pump ......................................................................................................... 2
3 Logic interface connections - RS232 serial control.................................................................. 5
4 Logic interface connections - RS485 serial control.................................................................. 6
5 RS485 multi-drop connections.........................................................................................13
6 Logic interface connection - mixed parallel and serial operation ...............................................15
Tables
Table Page
1 Logic interface connection pins........................................................................................ 3
2 Logic interface technical data.......................................................................................... 4
3 Summary of the commands that can be sent to the nXDS pump.................................................. 8
4 Command abbreviations................................................................................................11
5 Error codes ...............................................................................................................11
6 Hexadecimal conversion table.........................................................................................16
7 System status register 1 flags..........................................................................................17
8 System status register 2 flags..........................................................................................17
9 Warning register 2 flags ................................................................................................18
10 Fault register flags ......................................................................................................19
11 Service flags..............................................................................................................20
Associated publications
Publication title Publication number
Vacuum Pump and Vacuum System Safety P400-40-100
nXDS Scroll Pump Instruction Manual A735-01-880
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