Honeywell DR4300 User Manual

Configuration, Startup, and Operation

of Recorder with Display

12/03

DR4300 Circular Chart Recorder Product Manual

111

4.3.17 Communication Set Up Group

Introductions

If the hardware supports the Modbus communication option, use the prompts in the communication set up
group to configure communication parameters.

Communication group prompts

Table 4-15 lists the function prompt in the communication set up group.

For a 2-pen recorder, the desired input channel is displayed on the left side of the operator interface. Press

FUNC to select channel.

Press SETUP key until “COMM” appears in the lower display.

Press FUNC key to select the parameter.

ATTENTION

Each pen channel must have its own unique address. However, set the same baud rate and
transmitter delay for both pens.

Table 4-15 Communication Parameter Definitions

Lower Display

Prompt

Upper Display

Range of Setting

or Selection

Parameter

Definition

COMM

DIS [factory setting]
ENAB

COMMUNICATION ENABLE

—Enable/disable

communication.

ADDRES

1 to 99
[factory setting = 0]

ADDRESS

—Specify the pen channel’s address on the

network.

BAUD

300
600
1200
2400
4800
9600 [factory setting]
192K

BAUD RATE

—Specify the baud rate used by all devices

on the network.

XmtDLY

NONE [factory setting]
10ms
20ms
30ms
40ms
50ms

TRANSMITTER DELAY

—Specify the minimum delay

between the end of a received message and the start of
the response message.

DBLBYT

FP B
FP BB
FP L
FP LB

DOUBLE BYTE ORDER

—Determines Floating Point

Byte order in Modbus queries.

Big Endian
Big Endian – Byte Swapped
Little Endian
Little Endian – Byte Swapped