• Parity: odd or even
• Stop bits: 1 or 2
• Baud: 1200, 2400, 4800, 9600, 19200, 38400
You do not need to configure these communications parameters on the device.
Procedure
1. Enable or disable Modbus ASCII Support as desired.
The setting of this parameter controls the range of valid Modbus addresses for your device.
Modbus ASCII support Available Modbus addresses
Disabled 1–127, excluding 111 (111 is reserved to the service port)
Enabled 1–15, 32–47, 64–79, and 96–110
2. Set Modbus Address to a unique value on the network.
3. Set Floating-Point Byte Order to match the byte order used by your Modbus host.
Code Byte order
0 1–2 3–4
1 3–4 1–2
2 2–1 4–3
3 4–3 2–1
See the following table for the bit structure of bytes 1, 2, 3, and 4.
Table 10-4: Bit structure of floating-point bytes
Byte Bits Definition
1 SEEEEEEE S=Sign
E=Exponent
2 EMMMMMMM E=Exponent
M=Mantissa
3–4 MMMMMMMM M=Mantissa
4. Optional: Set Additional Communications Response Delay in delay units.
A delay unit is 2/3 of the time required to transmit one character, as calculated for the port currently in
use and the character transmission parameters.
Additional Communications Response Delay is used to synchronize Modbus communications with
hosts that operate at a slower speed than the device. The value specified here will be added to each
response the device sends to the host.
• Default: 0
• Range: 0 to 255
Configuration and Use Manual Integrate the meter with the control system
MMI-20020954 March 2021
Configuration and Use Manual 101
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