80
Sec
tion 5
App
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ndic
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E3NW-CRT
User’s Manual
Section 5
Command Descriptions and Data Formats
Command Descriptions and Data Formats
This section describes the commands and data formats for the Sensor Communications
Unit.
The data formats are the same for explicit message communications and I/O command
communications in I/O Mode 2. However, when using explicit messages, 4-byte data is
expressed in little endian format. (For example, data such as FB 1E 12 34 would be
expressed as 34 12 1E FB.)
●
Sensor Communications Status
This command reads the status of consistency in the number of connected Sensor
Amplifier Units and the status of communications with the Sensor Amplifier Units.
• Number of Mounted Sensors
The number of mounted Sensors that was recognized at startup is given in
hexadecimal.
• Number of Sensors Available for Communications
The number of Sensors that is currently available for communications is given in
hexadecimal. If Dummy Sensors have been registered, this value will be the sum of
the actual number of Sensors available for communications plus all registered Dummy
Sensors.
• Inconsistent Number of Sensor Amplifier Units
This bit turns ON if a communications error occurs after communications are
established with a Sensor Amplifier Unit (e.g., if the Sensor Amplifier Unit or
Distributed Sensor Unit is disconnected).
Bit
Description
Data
00 to 04
Number of Mounted Sensors
Given in hexadecimal.
05 to 07
No applicable data
Always 0
08 to 12
Number of Sensors available
for communications
Given in hexadecimal.
13
No applicable data
Always 0
14
Inconsistent Number of Sensor
Amplifier Units
0: Consistent number of Sensor Amplifier Units
1: Inconsistent number of Sensor Amplifier Units
15
No applicable data
Always 1
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