1. General description
The D302 module is used to read and convert the value of the position of the two Sylvac probes
up to a resolution of 0.1µm. The results are available on a USB port and on a MODBUS RS485
port. Numerous other integrated functions can be used to solve most measuring problems
encountered.
The D302a module is fitted with an extension which is used to supply analogue voltages corre-
sponding to the position of the probes with a range of +/-10V and a resolution up to 0.025mV.
An extension with 4 sensors is available with modules D304 and D304a
In the rest of this manual, D30Xy means either a D302 module, a D304, a D302a or a D304a.
1.1 Front
E
Power LED
Probe LEDs
RS485 bus activity
1.2 Back
RS485 bus output
RS485 bus input
Connector
External contact
The earth connection is not vital but it is advisable in environments with a great deal of electro-
magnetic interference.
LEDs
USB port
Earth
Configuration jumpers
24V power supply plug and
analogue outputs
Channel 1 and 2 probe
inputs
Charger connector
4
DIN 35mm mount-
ing rail