Calex PMB21 운영자 매뉴얼 - 페이지 15

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ACCESSING CONNECTED SENSORS VIA ANOTHER MODBUS MASTER

If the PM180 is connected to another Modbus Master, such as a Modbus PLC or SCADA, the

entire sub-network (the PM180, the connected sensors and output modules) appears as a

single Modbus Slave device to the PLC or SCADA. The Modbus Slave ID (Modbus Address) is

that of the PM180.

The temperatures and settings of the sensors connected to that PM180 can be read by

adding the following offsets to the sensor's own Modbus register addresses. The Sensor Index

is the position of the sensor in the PM180 sensor list. The Sensor Index numbers correspond

to the positions of the sensors on the PM180 screen as follows:

Sensor Index

Example

To read the Filtered Temperature on a PyroMiniBus sensor in position 4 on the PM180 as

shown above, read from register 0x0E + 0x1400 = 0x140E = decimal 5134.

For information on the Modbus addresses for other compatible sensors, please see the

Operator's Guide for that sensor.

MAINTENANCE

Our customer service representatives are available for application assistance, calibration,

repair, and solutions to specific problems. Contact our Service Department before returning

any equipment. In many cases, problems can be solved over the telephone. If the sensor is

not performing as it should, try to match the symptom below to the problem. If the table does

not help, call Calex for further advice.

GUARANTEE

Calex guarantees each instrument it manufactures to be free from defect in material and

workmanship under normal use and service for the period of two years from the date of

purchase. This guarantee extends only to the original buyer according to Calex Terms and

Conditions of Sale.

Address offset (hex)

0x1000

0x1100

0x1200

0x1300

0x1400

0x1500

Address offset (decimal)

4096

4352

4608

4864

5120

5376