Brooks Instrument XacTorr CMX160 - Manual (Page 28)

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• Green – unit is at the proper operating temperature.
• Red – unit is over the proper operating temperature or at a fault condition.
1. After assuring power has been removed to the system, connect the
appropriate 9-pin (Figure 23) and 5-pin connector (Figure 24). If no connector
cable is available, use one the following pin-out table for construction of one.
2. Connect the 9-pin cable to the CMX.
3. Hand tighten the lock screws to secure the connector.
4. Connect the DeviceNet cable to the CMX.
5. Hand tighten the connector.
Figure 23: DeviceNet Model 9-Pin D-Sub Connector Pin Out
Consult local documentation for DeviceNet communications details
3.7.1 DeviceNet SET UP (Example)
Issue the following commands in the order shown to set up the DeviceNet
communication connections.
1. Verify the baud rate and MAC ID (address) is set properly.
2. Allocate the explicit connection.
3. Set expected packet rate (epr) for explicit connection to 0, (no time out)
(NOTE: this step is optional).
4. Allocate the polled I/O connection.
5. Set expected packet rate for polled connection to 1000mSec.
6. Send poll command to device (no data is sent with the poll command).
7. Process the poll data.
8. Repeat steps 6 and 7.
The default configuration for the CMX device is to return the pressure data as a
real, floating point number. The real data conforms to the IEEE-754 standard for
32-bit floating point number representation. Therefor, there will be five bytes of
data returned with each poll response. The first byte is the status byte (typically
0x80). Bytes two through five are the four bytes of real pressure data, with the
least significant bytes first and ending with the most significant byte.
PIN # PIN ASSIGNMENT
1 Output signal
2 No connection
3 Temperature status
4 Not Used
5 Not Used
6 Chassis ground
7 Remote ZERO trigger
8 Signal common
9 Not Used
Connector Option 3
CMX
Cable
9-Pin D Sub Male
9-Pin D Sub Female
3.0
_INSTALLATION