12-2 12. EMERSON
12.1.1 EC10/EC20/EC20H (MODBUS RTU)
Communication Setting
Editor
Communication setting
(Underlined setting: default)
PLC
Be sure to match the settings to those made under [Communication Setting] of the editor.
Calendar
This model is equipped with a calendar function; however, the calendar data cannot be written from the V series. Thus, time
correction must be performed on the controller side.
Available Device Memory
The available setting range of device memory varies depending on the PLC model. Be sure to set within the range available for
the PLC to be used. Use [TYPE] when assigning indirect device memory for macro programs.
Indirect Device Memory Designation
* For bit designation, an expansion code setting is required.
00H: when designating bit 0 to 15
01H: when designating bit 16 to 31
Item Setting Remarks
Connection Mode
1:1
/ 1:n / Multi-link2 / Multi-link2 (Ethernet) /
1:n Multi-link2 (Ethernet)
Signal Level RS-232C
/ RS-422/485
Baud Rate 4800 / 9600 / 19200
/ 38400 bps
Data Length 8 bits
Stop Bit 1
/ 2 bits
Parity Odd /Even
/ None
Targe t Por t N o. 1
to 247
Device Memory TYPE Remarks
D(Data register) 00H
SD (Special data register) 01H
Y(Output I/O) 02H
X (Input I/O) 03H
M (Auxiliary relay) 04H
SM (Special auxiliary relay) 05H
S(State relay) 06H
T(Timer) 07H
C(Counter) 08H
Z (Offset addressing register) 09H
TW (Timer) 0AH
CW (Counter) 0BH
CDW (Counter) 0CH Double-word
R(R) 0DH
15 8 7 0
n+0 Model Device type
n+1 Address No.
n+2
Expansion code
*
Bit designation
n+3 00 Station number