Interbus Sap Programming; Interbus Status Information And Commands; Table 2-4: Meaning Of The Symbols On The [Interbus][Diagnostics] Page; Table 2-5: Interbus Status Information And Commands - Addi-Data APCI-8001 Option Manual

O
PTIONS MANUAL
The following table explains the graphical symbols (speed buttons) from the screenshot above.

Table 2-4: Meaning of the symbols on the [Interbus][Diagnostics] page

Symbol Meaning
See Interbus configuration table
Read in the last saved quasi-statistical Interbus errors from the MCU-G3. The data that was
detected when executing the last Interbus diagnosis cycle is analysed.
See Interbus configuration table
See Interbus configuration table
See Interbus configuration table
See Interbus configuration table
See Interbus configuration table
See Interbus configuration table
2.2.4

Interbus SAP programming

The additional software functions of the OPIBS Option can be used very effectively by the SAP programming
method, in addition to the PCAP programming method.
Note: Accesses to the OPIBS Option should only be made from one task. Otherwise, it must be ensured that
the OPIBS Option is only accessed sequentially (not simultaneously) from several tasks. If this is not
ensured, unexplainable runtime behaviour may occur.
2.2.4.1

Interbus status information and commands

The Interbus functionality can be used by reading and writing pre-defined system variables. Using these
variables, you can communicate directly with the "socket driver" that is integrated in the rwmos.elf operating
programme. The definitions of the variables described below are in the INTERBUS_AT_SPECS.INC include
file. As already mentioned above, the variable access is regulated in accordance with the IEC1131
programming language, with the aid of the AT mechanism. This is described in detail in [Universal Object
Interface / section 2.2].

Table 2-5: Interbus status information and commands

System
parameter
IBSRelease
Handles_w
IBSOpen_r
IBSOpen_w
IBSClose_r
Value / Description
Opcode
1 Commands when all AT descriptors are discarded and must be structured
again.
Checks if the Interbus driver has already been opened.
0 Interbus driver closed
1 Interbus driver open
1 Initialises the overall driver (memory, timer), executes a hardware reset for
the IBS UART protocol chip and sets the required baud rate.
This function must first be called at the start of each application. Otherwise
it is not possible to produce a communication connection between the user
programme and the OPIBS.
Important: The command should only be executed if the driver has not yet
been opened. This can be determined using IBSOpen_r.
See also the error codes in [section 2.2.6].
Checks if the Interbus driver has already been closed.
0 Interbus driver open
1 Interbus driver closed
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