4–12
EPM 5100 ELECTRONIC POWER METER – USER GUIDE
CHAPTER 4: PROGRAMMING
4.5
Communications Values
4.5.1
Communication Address Setup
Use a small screwdriver to set the most significant digit of the Modbus address by setting
switch S1 to the required digit in the range 0 to 9, as illustrated in the figure below. Repeat
this operation for the middle digit of the address by adjustment of switch S2 and for the
least significant digit of the address by adjustment of switch S3.
Modbus addresses are valid only in the range 33 to 247. Setting the address outside this
range will terminate response of the device to the Modbus network.
FIGURE 4–5: Modbus Address Setup
4.5.2
Baud Rate Setup
Adjust sliders 3 and 4 (refer to the figure above) as indicated below for compatibility with
the operating baud rate of the network:
NOTE
ON
1 2
3 4
S2
S3
S4
8
2 3
9
4
5
6
7
1
0
S1
8
2 3
9
4
5
67
1
0
8
2 3
9
4
5
67
1
0
Table 4–2: Baud Rate Setup
Baud Rate
Slider 3
Slider 4
1200
ON
ON
2400
OFF
ON
9600
ON
OFF
19200
OFF
OFF
