Setting Up Bus Mode - HBM WE2108 Serie Referenzhandbuch

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Output buffer
After a S98 command, each WE2108 executes following commands, but outputs no answer
on the interface. The answer is stored in the output buffer. On execution of further com-
mands, the buffer is overwritten with the latest answer in each case. If the WE2108 is
selected again (with Sxx, xx = unit address), it outputs the stored answer. This therefore
does not belong to the command Sxx, but to a previously executed command.
Example (unit address is 31):
9.3
There are two possibilities for the first−time allocation of the addresses on setting up the bus
mode:
A.
HBM
A unit in which the address 31 is set executes commands and sends answers (condition
as after S31).
Units with deviating address execute commands, but send no answer (condition as after
S98)
After sending a Select command, this determines the further behaviour.
S98; (broadcast command)
³ no answer
ASF7;
³ no answer
ICR?;
³ 12CRLF (answer to ICR?;)
S31;

Setting up bus mode

Switch WE2108 one after the other to the bus.
Connect first WE2108 to the bus line (the factory setting is ADR31, BDR7)
Initialize interface of the master (9600 Bd, 8, e,1)
Sxx; Output only if unit address xx is not 31
ADR01; Set wanted address
Connect next WE2108 to the bus
Sxx; Output only if unit address xx is not 31
ADR02; etc.
Scale electronic unit (NSW)
WE2108