Addi-Data APCI-8001 Podręcznik - Strona 6
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3 Using the ML71 measuring system
When using the ML71 measuring system from Hottinger Baldwin Messtechnik GmbH, an
implementation exists for recording measuring values via a CAN interface. Measuring values are
handled using the resource interface of the APCI-8001 / APCI-8008.
The measuring values are transferred to the APCI-8001 / APCI-8008 via the CAN bus. When using
CAN-Bus 1 of the ML71, the measuring values can be processed individually or line by line
(resource # 10000) or, in conjunction with the scanner functionality, block by block (resource #
10013).
When using CAN-Bus 2 of the ML71, only line-by-line processing can be carried out, since the
measuring values are not acknowledged via a sync signal here.
3.1 Version notes
The RWMOS.ELF operating system software must include the options "optionMSM9255"
(CAN support), "optionRESOURCE" and "optionML71" in order to use the function of the ML71
module. This version is only available from V2.5.3.72.
3.2 Initialising the CAN module for ML71
The information in Section 2 sometimes applies here. However, the ML71 measuring system does not
support the CANopen protocol. Thus, only the following operations are necessary and permitted for
the initialisation and commissioning of the CAN bus.
•
Run CanBus Clean at program start so that any existing access objects are deleted.
•
Request CanBusOpen; if not "true", then assign 1 to each of the variables "CanBusOpen",
"CanBusInit" and "CanBusStart"
•
Enable the CanBus function in RWMOS by calling the "CanBusEnable" function with the
parameter 1; only then are accesses via the CanBus possible
•
Read the measuring values using resource # 10000 or using resource numbers 10000 or
10013 in the scanner module (see Table 4).
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