OI_EC2-XC645CX_A1_A2L_A3_EN_Rev01_866933.docx  EC2-XC645CX           11/54 
 
  Additional function of the digital input 7 (27-28) 
 
The digital input 7 can operate also as probe. To enable this function set P4C as NTC or PTC. 
 
5.6  Analog output connection 
 
The controller supplies  up to 2 analog outputs, terminals, kind of output and functionality are 
shown in the following table 
TERMINALS  RELATED PARAMETER 
Analog output 1  23[+] - 24[-]. 
AOC: Kind of signal (4 - 20 mA/ 0 - 10 V) 
AOF: function 
Analog output 2  8[+] - 10[-]. 
2AOC: Kind of signal (4 - 20 mA/ 0 - 10 V) 
2AOF: function 
 
5.7  How to connect monitoring system - RS485 Serial line  
 
The EC2-XC645CX can be connected to a monitoring system thanks to the serial output. 
To convert the TTL to RS485 signal, the XJ485CX has to be used. 
The XJ485CX
 is a TTL/RS485 external converter. Insert it into the TTL receptacle to convert the TTL 
output into a RS485 (+) and (-) signal for the monitoring system MODBUS_RTU compatible. (XWEB). 
The Adr parameter is the number to identify each electronic board. Address duplication is not 
permitted, in this case the communication with monitoring system is not guaranteed (the Adr is 
also the ModBUS address).