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5.7 Connection of communication I/F terminal (partly option)
The KR3000 can be communicated with a master unit via Ethernet and RS-232C, RS-422A
or RS-485, and with a slave unit via RS-422A or RS-485.
*RS-232C /422A /485 terminal and serial communication function are optional.
1) In case of high order communications via Ethernet
[In case of connection with a PC by 1 to 1]
For the connection of a PC and the Ethernet IF by 1 to 1, use the STP crossover cable.
[In case of connections with PCs by N to N]
For the connection to multiple PCs or an existing LAN, use a switching hub and an STP straight cable
between the hub and the Ethernet IF.
2) Types of communication terminals
Ethernet connector
RS-422A/485 terminal
RS-232C connector
STP crossover
cable
KR3000
PC
(With LAN function)
PC
(With LAN function)
Hub
Twist-pair
straight cable
STP straight
cable
KR3000
SG
RDB
RDA
SDB
SDA
RS-422A/RS-485
High order or low order communication
RS-232C
High order communication only