1. Part numbers

• CE-AK10-3 —— 8 switching value inputs, RS-485 output interface, MODBUS protocol, no isolation, S case style.

2. Specifications

• Input —— Passive contacts (Dry contacts).
• Withstand voltage of the passive contacts —— ≥24VDC
• Output data —— Values of 8 channels of switching signal input. (“1” means “on”, “0” means “off”.)
• Output interface ——RS-485 bus. 1200m, ±15KV ESD protection.
• Baudrate —— 1200, 2400, 4800, 9600, 19.2k bps.
• Refreshing period —— 100 mS.
• Quiescent power consumption —— <350 mW (+24V).
• Power supply —— +24V
• Operating temperature —— 0℃～+50℃.
• Storage temperature —— -20℃～+80℃ (RH:5%～95% no condensing).

3. Case style and dimentions

• S case style (as the photo shown below).  Dimensions: 83×36×29.5 (L x W x H) mm

4. Connections:  Pin 1～8: Eight inputs. Com: the common input.

5. Protocol :  It is supposed that the all following ID address is 01 and the baudrate code is 06(9600bps).

5.1 The command “To read the data of all switching value inputs”:

A: The Message from the master equipment:

Note: The values data will be stored in the first register 0000H, the high order byte is before the low order byte.

B: The correct responded message from the slave equipment (the data logger):

Note: “Values data” mean 8 bits of switching values. The most significant bit is the datum of switching value input 8 and LSB is the datum of switching value input 1.

5.2　 The command “To modify the address and baudrate”:

A: The Message from the master equipment:
(Change the address from 01 to 02; set new baudrate to 9600 bps <code 06>)

Note: The data of new address and baudrate will be stored in the first register 0020H, the high order byte is address data and the low order byte is baudrate code. Codes for baudrate setting: 03-1200bps, 04-2400bps, 05-4800bps, 06-9600bps, 07--19200bps.