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SERIAL INTERFACE (OPTION)
12 - 6
ETC00781(1) Series 100 e 10/2001
Rosemount Analytical
12.3.3 Switching ON/OFF Interface Operation
The analyzer may be set to either “online” or “offline” status. This setting may be performed either
from the keypad or via telegram input.
Keyboard setting:
SIP parameter On.-L. = 1 for online status
SIP parameter On.-L. = 0 for offline status
Telegram setting:
Instruction code 6: sets analyzer online status
Instruction code 7: sets analyzer offline status
If the analyzer is set to offline status, it will accept only instruction code 6. All other instructions
will be ignored and result in transmission of appropriate status telegrams.
12.3.4 Setting Interface Parameters
Agreement of interface parameters between analyzer and host computer is a fundamental
requirement for communication without errors.
The following analyzer parameters are concerned:
R baud rate: 600 / 1,200 / 2,400 / 4,800 / 9,600 / 19,200 / 38,400 bits/s
R data bits: 8
R stop bits: 2
R parity bit: none
R echo mode: on / off (received characters will be retransmitted immediately)
R LPB-test: on / off (message - length parity check)
R ID-no.: 0 to 99 (device ID - no. in RS 485 mode)
START UP (INTERFACE - PARAMETER)