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RS-232 Serial Connection

The Remote Display supports an RS-232 connection to data consumers, such as a computer or PLC. To

connect the Remote Display to an external RS-232 device, use the following procedure:

1. Find the female RS-232 connector on the rear panel of the Remote Display Mux Box.

2. Using a shielded RS-232 cable, connect the Mux Box to the external data consumer.

a. Depending on the device and cable configuration, it may be necessary to use a female-

to-male gender changer. They can be used freely without any impact on the Remote

Display functionality.

3. Use the following RS-232 settings on the external device to establish communication with the

Remote Display Mux Box.

Speed (baud)

9600

Data Bits

Stop Bits

Parity

None

Flow Control

XON/XOFF

4. Refer to the

Communication Protocol section below for a list of available commands. Many

modern computers use USB ports in lieu of RS-232 ports. The Remote Display can still

communicate to these devices over RS-232 by using a Serial-to-USB converter. There are many

such devices available. When searching, ensure that the device is compatible with the Operating

System version that is being used on the computer.

Communication Protocol

The following list summarizes the serial commands available for exchanging data with the Remote

Display Mux Box. These commands apply to both the RS-232 and PC USB communication modes. Type

ete or return afte oad.

Command

Description

Print current gauge readings for all channels

N:A

Pit cuet gauge eadig fo Chael N. ex: 1:A for channel 1

Print data packet* for all channels

N:D

Pit data packet* fo chael N

Request a measurement update on all Digimatic channels on Tablet

N:R

Reuest a easueet update fo chael N on Tablet

Clear gauge measurements for all channels (quadrature only)

N:C

Clea gauge easueet fo chael N (quadrature only)

rstErr

Resets global errors

N:pXXX=?

Get the alue of cofiguatio paaete XXX fo chael N

N:pXXX=<new value>

“et the alue of paaete XXX fo chael N to <e alue>

Save

Saves any modified parameters to retentive flash

help

Show help text and command list

* Data Packet format: Channel:Reading:Analog Scale:New Data:Max:Min

Note that the Analog Scale field has a maximum value of 1000Note N = channel number

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 26 27

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