For example, use the KR502M-RS card reader, the standby current is less than 80mA, the max current is less than 90mA, When the device is start,
Instantaneous current can reach 180 mA. As RS485 reader, consider the starting current is bigger, through the EXT RS485 interface can only
connect four readers for power supply. So the power of control panel connect only nearest 4 readers.
If RS485 reader is connected externally and shares the power supply for the device, it is recommended that the connection between the EXT
RS485 port and the reader be no longer than 100m. Otherwise, it is recommended that the reader use a separate power supply.
For some of the devices with much greater consumption, we suggest to using the separately power supplies, to make sure the steady
operation.
The background PC software is able to communicate with the system according to three protocols (TCP/IP, RS485 and WIFI (optional)) for data
exchange and remote management. The communication cable should be as far away from high-voltage lines as possible. Do not keep the
communication cable in parallel with power cords or bind them together.
8.1 TCP/IP Communication
For ZKAccess3.5 software
: Click [Device] > [Device] > [Add], also you can click [Device] > [Search Device] to search devices which in the
network, and directly add from the searching result.
8.2 RS485 Communication
1) Internationally accepted RVVSP (shielded twisted-pair) wires should be used for communication to effectively avoid interference.
2) RS485 communication wires should be connected by means of bus cascade connection.
3) Considering stability of communication, it is recommended the length of RS485 bus is less than 600m.
4) Up to 16 device numbers can be set because the rotary DIP switch on the control panel has 16 bits. Therefore, a single RS485 bus can be
connected to 16 access control panels at most.
5) To enhance the stability of communication when the bus is longer than 300m, connect the provided 120-ohm terminal resistor between the
485A and 485B wires of the first and last control panels respectively.
PC
TCP/IP
Printer
Card Issuer
Switch
1# Control Panel
2# Control Panel
N# Control Panel
Serial Line
PC
1# Control Panel
2# Control Panel
16# Control Panel
8. Equipment Communication
