Detcon 700 Series Remote Sensor/Alarm Relay Module With Profibus DP Interface - Manual (Page 15)

700 Profi-RAM
3.6 PDP Diagnostics
PDP Diagnostics displays the current status of the AnyBus Profibus connection to the network. This
information is useful for verifying the connection properties and status between the ProfiRam and the AnyBus
IC and, also between the AnyBus IC and the Profibus network.
From the PDP Diagnostics text scroll, hold the magnet over PGM2 until the “V” prompt appears and then hold
continuously for an additional 3 seconds. The display will scroll the list of diagnostic parameters sequentially:
AnyBusIC Mode
FB I/O Config Status
SCI I/O Config Status
Node Online Status
Node in Clear Status
Node Address
Baud Rate
When the diagnostics status list sequence is complete, the Profi-RAM will revert to the “PDP Diagnostics”
text scroll. Move to another menu item by executing a momentary hold, or, return to Normal Operation via
automatic timeout of about 15 seconds.
4. 700 Profibus
The Profi-RAM module provides a bridge for a Model 700 gas sensor to a PROFIBUS-DP Network. This
allows a PROFIBUS Master, such as a PLC, to monitor the operation of the Profi-RAM, and the Model 700
sensor attached to it. The Profi-RAM functions as an intelligent PROFIBUS-DP Slave on the Network.
The PROFIBUS-DP Network connects through the 5-pin removable header located on the backside of the
Profi-RAM assembly (Figure 9). The PROFIBUS-DP Network is electrically isolated from the RAM and
Model 700 electronics. If the Profibus Module is located physically at the end of the Profibus Network, the
termination switch on the Profibus PCA should be ‘ON’.
700 Sensor
Connections
Unit Power and
mA Output
(No connection)
Alarm Relay
Connections
Profibus
Connections
A
B
PE
A
B
Profibus
Termination
Switch
Figure 9 Profibus Connections
The Profi-RAM interface supports Automatic Baud Rate Detection, with an operating range of 9600 baud up
to 12M baud. The station address is set via the Profi-RAM Operator interface. Data exchange with the master
device is accomplished by cyclic data transmission.
Profibus RAM I.M. Rev. 0.3 Page 11 of 14