Specifications

1070 072 131-102 (96.08) GB
BUEP03E Protocol8-10
8.7 BÜP03E Commands
8.7.1 Command Activation
The BÜP03E protocol incorporates several commands which should be
activated by the user for communication purposes. The commands are
activated by the R5REQ function module.
The first parameters (P0 - P2) of the R5REQ function module point to a
memory (DM, DF, DB) in which the protocol-specific job parameter list
has been filed (see description of R5REQ, Pages Fehler! Textmarke
nicht definiert. ff).
Protocol-specific parameters:
PW1 : Result of the job
PW2 : CXN and channel number
PW3 : Job number (0 - 32767)
The user assigns PW4 - PW15 with parameters according to the com-
mand.
When a job parameter list for a specific command has been described
and Bit 15 has been set to Low (zero) in PW3, the command is conveyed
to the BÜP03E protocol by the R5REQ function module. The command is
then activated and entered in the R500 command queue. BÜP03E retrie-
ves this command from the command queue and executes it.
A command can only be active once at any one time. If the user ne-
vertheless attempts to start a command which is already active, BÜP03E
terminates the command and issues a fault message. The BÜP03E pro-
tocol ensures that the command, e.g. Receive, cannot be active twice at
the same time.