Commissioning - Pepperl+Fuchs IDENTControl IC-KP-B5-V23 Manual

IC-KP-B5-V23

Commissioning

6 Commissioning
6.1 Connection
Warning!
Before commissioning, check once again that the connections are correct.
Before commissioning, familiarize yourself with the system of communication
between your interface module and the read/write station (see chapter 7).
Commissioning requires accurate knowledge of INTERBUS and the programming
of your master device.
After the supply voltage is connected, the green LED in the voltage connector and
the PWR and UL LEDs on the display panel must light up. If the LED in the
connector lights up red, the polarity of the power supply is reversed.
6.2 Preliminary considerations
Due to the complexity of field bus programming with the INTERBUS it is
unfortunately very difficult to make generally valid statements about
commissioning.
One very important aspect of the operation of an extended identification system
on the INTERBUS is the time response of the overall system. The question "How
long after the positioning of a data carrier in front of a R/W head will the read data
be available in my computer?" is answered with the aid of knowledge of the
INTERBUS protocol structure and the following formula:
t = [13 * (6 + n) + 1.5 * m] * t
t
t = transfer time
t
n = number of usable data bytes (per node, only apply input or output data byte),
here: 10 bytes
m = number of remote bus stations installed
t = bit duration, where t
bit
t = software run time, where t
sw
t = runtime on the transmitting medium, on copper t
PH
is the length of the remote bus cable in km.
On large projects, or if you have little experience of programming an INTERBUS
system, you should always construct a laboratory set up of your application and
test the data transfer to the INTERBUS master before installing the system in the
plant.
+ t + t
bit sw PH
= 2 µs at 500 kBit/s or t
bit
= 200 µs
sw
= 0.5 µs at 2 MBit/s
bit
= 0.016 ms*l/km where l
PH
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