Cut Sheet

Volume 7—Logic Control, Operator Interface and Connectivity Solutions CA08100008E—February 2014 www.eaton.com V7-T4-35
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4.2
PLC, I/O and Communications Products
XC Series Programmable Logic Controllers
XC121 Compact PLC, continued
Description Unit XC-CPU121-2C256K
Interfaces
Serial interface (RS-232) without handshake lines
Baud rate kbit/s Programming (character format: 8 data bits,
No parity, 1 stop bit) 19.2, 38.4 (default), 57.6
Connector type RJ45
Potential isolation No
In transparent mode
Baud rate kbit/s 0.3, 0.6, 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6, 115.2
Character formats 8E1, 8O1, 8N1, 8N2, 7E2, 7O2, 7N2, 7E1
Number of send bytes for block 190
Number of receive bytes for block 190
COM2 (RS-232/RS-485) without handshake lines
Baud rate kbit/s Transparent mode (setting through function blocks)
0.3, 0.6, 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6
Character formats 8E1, 8O1, 8N1, 8N2, 7E2, 7O2, 7N2, 7E1
(setting through function blocks)
Potential isolation No
Bus termination External, for RS-485
CAN1/CAN2 interface
Baud rate kbit/s 10 – 500
Potential isolation No
Stations 126
Bus termination Adjustable for each interface (CAN1/CAN2)
PDO type Asyn., cyc., acyc.
Power Supply of Local Inputs/Outputs (24 V
Q
/0 V
Q
)
Input voltage Vdc 24
Voltage range Vdc 19.2–30, observe polarity
Potential isolation
Between power supply and CPU voltage Yes
Overvoltage protection Yes