Filter
Top Products
Restriction
To configure Floating-Point Byte Order or Additional Communications Response Delay, you must use ProLink II.
Procedure
1. Set Disable Modbus ASCII as desired.
Support for Modbus ASCII limits the set of addresses that are available for the
transmitter's Modbus address.
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 Protocol to match the protocol used by your Modbus/RS-485 host.
Options
Description
Modbus RTU (default)
8–bit communications
Modbus ASCII
7–bit communications
If support for Modbus ASCII is disabled, you must use Modbus RTU.
3. Set Modbus Address to a unique value on the network.
4. 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 Table 6-16 for the bit structure of bytes 1, 2, 3, and 4.
Bit structure of floating-point bytesTable 6-16:
Byte Bits Definition
1 SEEEEEEE S=Sign
E=Exponent
2 EMMMMMMM E=Exponent
M=Mantissa
3 MMMMMMMM M=Mantissa
4 MMMMMMMM M=Mantissa
Integrate the meter with the control system
118 Micro Motion
®
9739 MVD Transmitters