Emerson 9739 Manuel D’Utilisation

To configure Floating-Point Byte Order or Additional Communications Response Delay, you must use ProLink II.

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.

1–127, excluding 111 (111 is reserved to the service port)

1–15, 32–47, 64–79, and 96–110

2.

Set Protocol to match the protocol used by your Modbus/RS-485 host.

8–bit communications

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.

1–2    3–4

3–4    1–2

2–1    4–3

4–3    2–1

See 

 for the bit structure of bytes 1, 2, 3, and 4.

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

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