Rockwell Automation Publication 843ES-UM001A-EN-P - February 2020 75
Diagnostics and Troubleshooting Chapter 6
Use explicit messages to communicate with an encoder and obtain additional
fault, status, or configuration information that is not available in the safety I/O or
standard I/O tag structures. Any controller can send an explicit message on the
network, which can be used to read any attribute. When an explicit message is
used, a class ID must be specified. The class ID identifies the safety or standard
object type in the encoder that is accessed. For help with message instructions, see
Logix Designer application online help and publication 1756-PM012
.
Figure 15 - Explicit Message Example
Warnings
Table 24 - Supported Warnings (Attribute 47+48)
Bit Warning Description
FALSE
(0) (47)
TRUE (1)
(47)
0 Frequency exceeded Max. velocity exceeded OK Exceeded
1 Light control reserve
Permissible internal LED current in the
sensors exceeded
OK
Out of
range
2…5 Not supported Not implemented Always 0 —
6 Minimum velocity flag Minimum velocity setpoint reached OK Fall below
7 Maximum velocity flag Maximum velocity setpoint reached OK Exceeded
8 Minimum acceleration flag Minimum acceleration setpoint reached OK Fall below
9 Maximum acceleration flag Maximum acceleration setpoint reached OK Exceeded
10 Position limits exceeded Max. position exceeded OK Exceeded
11 Reserved by CIP — Always 0 —
12 Reserved by CIP — Always 0 —
13
Vendor:
Temperature out of range
Temperature setpoints reached OK
Out of
range
14
Vendor: over/under voltage
(9.700…30.300mV)
Supply voltage outside permissible range OK
Out of
range
15 Not supported — Always —
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