Jetter JetWeb JX2-PR0FI1, Operator'S Manual, Page: 42 / 67

JX2-PROFI1 5 The Communication Module JX2-PROFI
Jetter AG 42
Register 1m199: Software Version
This register contains the software version number. The value corresponds to the
version number times a hundred, this means that in case of version number 1.01, the
register contains value 101.
As this is only a status register, it must not be written into.
Register 1m300...1m999: Range of Data
If a register from outside the range of configured data is read, the module will report
back -1 (0xFFFFFF). Writing access to these registers will be ignored.
The same applies, if the configuration is invalid (status register bit 0 = 0).
The following rules apply within the configured ranges:
Input words:
A reading access will always cause the latest input value to be reported back.
A writing access will cause the new input value to be set.
Output words:
If the module is in data exchange mode, and if a valid station address has been
defined, a reading access will cause the latest value of the PROFIBUS-DP master to
be reported back. If the prerequisites have not been met, value -65536 (0xFF0000)
will be reported back.
A writing access will never be possible, as these values are set by the PROFIBUS-
DP master.
Reading and writing the acyclic data blocks:
A reading access will normally report back the latest value of the register. In case the
data block has been inhibited by operating system of the module (status register bit
6 = 1), value -1 (0xFFFFFF) will be reported back and bit 7 will be set in the status
register.
A new value can be set by writing access. In case bit 6 has been set in the status
register, this value will be ignored and bit 7 will be set in the status register.