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MUX 2 & 4 Protocol
Format of data after pressing data button on gauge or sending command code.
N_MT_SZZZZZZZZ_EEEEEECRLF
_ : Is a blank
N : Number of input channels(1-4)
MT : Two characters representing type of data.
(MW=Measured value)
S : Sign (+ of -) of data
ZZZZZZZZ : Measurement data, 8 digit floating point format, spaces filled as zero’s
EEEEEE : Unit of data information
CRLF : Carriage Return and Line Feed
EXAMPLE:
1 MW+003.4665 inch correct data from gauge 1
2 MW-00088.29 mm correct data from gauge 2
4 MW +00001.55 mm correct data from gauge 4*
3 TO 999999.99 mm error reading from gauge 3*
RS232 OUTPUT SPECIFICATION
The RS232C interface operates in half duplex mode and is powered from the RS232C port.
RS232C PINOUT CONNECTIONS
2 TXD
3 RXD
4 DTR
5 GND
RS232C PARAMETER SETTINGS
8 DATA BITS
1 STOP BIT
NO PARITY
9600 BAUD
The 3.5mm mono socket will accept a footswitch input. When the two connections are shorted together it has the same effect as sending ASCII “A” and executes a multiple read.
COMMAND CODES
Command codes sent to MUX in ASCII format:
| ASCII | COMMAND | Example from MUX |
| 1 | Poll Gauge 1 | 1 MW+00013.67 mm |
| 2 | Poll Gauge 2 | 2 MW+00012.47 mm |
| 3 | Poll Gauge 3* | 3 MW+00015.43 mm |
| 4 | Poll Gauge 4* | 4 MW+00012.38 mm |
| A | Multiple Read | Multiple of above |
| X | Multiple Gauge Set | 1234 |
| V | Version | MUX2 V1.10 |
| ? | Current Settings | 1234 |
* relates to MUX-4 only
MULTIPLE READ
It is possible to configure the multiple read, this can also be triggered by using the footswitch, which polls whatever gauges the user requires by sending the following string;
x=12 Polls gauge 1 then 2
x=10 Polls gauge 1
x=1234 Polls gauge 1,2,3 and 4
x=4321 Polls gauge 4,3,2 and 1
x=0000 Polls no gauges
After sending the commend string, the MUX returns a string showing the current setting;
x=1234 Sent by user
1234CrLf Sent by MUX
Sample software for reading the MUX from Visual Basic is available upon request.
OPTIONAL ACCESSORIES
24542M-9 25 pin D type output cable
937179T Footswitch |
