System Integration; Process Data - Endress+Hauser IO-Link Ceraphant PTC31B Operating Instructions Manual

Ceraphant PTC31B, PTP31B, PTP33B IO-Link
Endress+Hauser
8

System integration

8.1

Process data

The measuring device has one current output and one or two switch outputs (depending
on the version ordered). The status of the switch outputs and the pressure value are
transmitted in the form of process data via IO-Link.
• In the SIO mode, the switch output is switched at pin 4 of the M12 plug. In the IO-Link
communication mode, this pin is reserved exclusively for communication.
• If the "with current output" option is ordered, the current output at pin 2 of the M12 plug
is always active or can optionally be deactivated via IO-Link or at the display or
configured as DC-PMP.
• The device' s process data are transmitted cyclically in 32-bit chunks.
Bit
Measuring device
Bit 30 and bit 31 indicate the state of the switch outputs.
Here, 1 or DC 24 V corresponds to the logical "closed" state on the switch output. The
remaining 30 bits contain the analog raw measured value of the device. This value has yet
to be scaled by the target system to the nominal operating range of the existing measuring
device.
Bit Process value
31 OU1
30 OU2
0 to 29 Raw value
The pressure value is provided by the measuring device as int30. The decimal separator
must be set with a gradient. The number of decimal places displayed is based on the
display format of the device. The gradients depend on the unit in question. The following
units are available:
• bar: 0.0001
• kPa: 0.01
• MPa: 0.00001
• psi: 0.001
Examples:
Pressure value
-320 mbar
22 bar
133 kPa
665 psi
399.5 bar
0 (LSB) 1 ... 28
Pressure value
Transmitted
-3200
220000
13300
665000
3995000
System integration
29 (MSB) 30
OU1
Value range
0 = open
1 = closed
0 = open
1 = closed
Integer
Scaled with gradient
-0.32
22
133
665
399.5
31
OU2
31