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IN19856
- 41 -
Rev 2
23.
Explicit Messaging
The Ethernet ITV has these explicit messages available. These are useful for programmatically
configuring the ITV settings. These options are also useful if using
LabVIEW™ software
or another
programming language that may not have real time implicit libraries readily available. Also, some
PLCs do not have implicit messaging. These are additional to all the Ethernet/IPs required default
explicit message requirements.
TYPE
Class
Instance
Attribute
Size
Description
Output
100
100
3
2 bytes
Pressure set-point
Input
150
150
3
4 bytes
2 bytes measured position, 2 bytes diagnostics
Output
101
101
3
1 byte
User gain
–
Refer to User Gain Section
Output
101
102
3
1 byte
User sensitivity
–
Refer to User Sensitivity section
Output
101
108
3
2 bytes
Configuration
Input
101
109
3
2 bytes
Supply Voltage Engineering units 10x volts (xx.x)
Ex. 24.2v equal 242)
Figure 28 Available Explicit Messages
23.1.
Diagnostics
Bit
Description
Extended Description
Persistent
0
Setpoint signal error
Setpoint Values out of range - If Setpoint greater than 120% full scale
No
1
Clear zero error
Not going zero within a timely manner
No
2
Pressure error
Output Pressure Greater the 120% full scale
No
3
Non-violate Data Error
Had to restore default as the configuration data was corrupt
Yes
4
Window Error
Not within setpoint and sensitivity in timely manner
No
5
Initializing Status
Set when initializing is occurring
No
6
Integrity Error
Memory Corruption Check
No
7
Not Used
Not currently used
No
8
System Fault
System Fault
No
9
Bus Fault
Network Error
No
10
Voltage Fault
Voltage out of range
No
11
Watchdog Fault
Recovered from watchdog fault
Yes
12-15
Not Used
Not Used
No
Figure 29 Instance 150 Diagnostics
23.2.
Configuration
Bit
Description
bit 0
Hold on connection loss
bit 1
POE Enable
bit 2
Enable Engineering units
bit 3
Auto clear faults
bits 7-4
Engineering Units
Figure 30 Config - Class 101 Instance 108 explanation