Datasheet

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3.5. Switching Outputs K1 – K4
ZD340 provides four presets and outputs with programmable switching characteristics.
K1 – K4 are fast-switching and short-circuit-proof transistor outputs with a switching capability
of 5 – 30 volts / 350 mA each. The switching voltage of the outputs must be applied remotely
to the Com+ input (terminal 29)
3.6. Serial Interface
The serial RS232 and RS485 interface can be used for the following purposes:
 Set-up of the unit by PC (if desirable), by means of the OS32 PC software
 Change of parameters during operation
 Readout of actual counter or other values by PLC or PC
The figure below explains the connection between the ZD340 counter and a PC using the
standard Sub-D-9 serial connector, and the connection via RS485 terminals to a PLC.
For details of serial communication, please refer to section 10.
2
3
5
RxD RxD
TxDTxD
GND
Screen
PC
ZD 340
ZA 340
ZR 340
14
(Sub-D-9)
30
31
RS 232
PLC
ZR 340
16
15
RS 485
A(+ )
B(-)
A
B
Where both, RS232 and RS485 interface are in use, you can communicate by the one or
by the other, but not by both interfaces at the same time
3.7. Fast Analogue Output
An analogue output is available with all ZA models, providing a voltage output of +/- 10 volts
(Load = 3 mA), and a current output of 0 – 20 mA or 4 – 20 mA (load = 0 – 270 Ohms). All output
characteristics like beginning of conversion range, output swing etc. are freely programmable
via menu. The response time of the analogue output is less than 1 msec. (time from encoder
event to analogue out). The resolution is 14 bits.
Please note that extensive serial communication with the unit may temporary increase the
analogue response time.