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Technical Information
Window Protocol
Both RS232 and the RS485 interfaces are available on the 9-pin D-type serial
input/output connector. The communications protocol is the same (see the
structure below), but only the RS485 handles the address field. Therefore, to enable
the RS485, you need to select both the type of communication and the device
address using the front panel menu or the A-Plus Software.
The Window Protocol is the same of the Turbo Pump, but the meaning of the
Window is different (see table 11 "Windows Description").
Communications Format
8 data bit
No parity
1 stop bit
Baud rate: 9600
Communications Protocol
The communications protocol is of MASTER/ SLAVE type, where:
Host = MASTER
Controller = SLAVE
The communication takes place as follows:
1
The host (MASTER) sends a MESSAGE + CRC to the controller (SLAVE).
2
The controller answers with an ANSWER + CRC to the host.
3
The MESSAGE is a string in the following format:
4
<STX>+<ADDR>+<WIN>+<COM>+<DATA>+<ETX>+<CRC>
When data is indicated between two quotes ('...'), it implies that the data indicated is
NOTE
the corresponding ASCII character.
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Agilent IPCMini Ion Pump Controller User Manual
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