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4.5.15 Hints for setting up control programs
NOTE
During the test phase of control programs all program messages should
be transmitted separately. Each command should be followed by a status
request (response message) so that possible errors are read out directly
after the command causing them.
NOTE
The producer of the interface card being used in the control computer will
provide communication functions for both directions between PC and
PRO8000 (-4) / PRO800 for all common software packages. These will be
embedded in the programming text and accomplish the data transfer
between control computer and PRO8000 (-4) / PRO800. We recommend
building these write and read back commands into separate functions and
then using these functions for the data transfer.
These functions should use an additional global flag that determines
whether the write or read back communication is to be stored on a data file
together with the talker and listener address of the IEEE488 system or
printed out additionally.
Occurring problems on the bus, or error messages that cannot be ex-
plained immediately can be investigated later by analyzing the data
transfer file between the PRO800 / PRO8000 (-4) and the control com-
puter.
The same procedure is useful for the RS 232 communication.