User manual

Functional description
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: [phone] · www.akytec.de
5
4 Functional description
A 4-digit, 7-segment LED display (red) with 14 mm character height displays data received from the RS485
network, error messages and/or configuration parameters of the device.
The secondary voltage source with galvanic isolation guarantees a stable power supply to the device and
offers protection against polarity reversal.
The RESET button is positioned on the cylindrical surface of the device. The button enables to retrieve the
configuration parameters and to restore factory settings, if necessary.
The device has the following functions:
– receiving data from a master device in the slave mode
– querying data from a slave device in the master mode
– processing received data according to the set parameters
– displaying transmitted value
– displaying transmitted value of a type Int or Word with the set number of decimal points
– optional flashing function
– displaying errors if the data transfer is faulty or the received value cannot be displayed (see 6.5)
– displaying configuration parameters of the device
– modifying configuration parameters according to data received from the master
PS – Power supply
Fig. 1 Block diagram
PS
Display
SMI2
Converter
TTL
↔RS485
Micro-
8 8 8 8
RESET
RS485
controller
10.5...30 V DC