User manual
Reference  MVI56-HART ♦ ControlLogix Platform 
User Manual  HART Multi-drop Master Communication Module 
Page 112 of 171  ProSoft Technology, Inc. 
  October 13, 2011 
Offset  Content  Description 
19  Device Status (bit mapped)  Each bit in this word corresponds to a slave address 
on the network starting at bit 1 for slave address 1. Bit 
0 is not used. If the bit is set, the slave is in error. If 
the bit is clear (0), the slave is not in error. 
20  Device Poll List (bit mapped)
Each bit in this word corresponds to a slave 
address on the network starting at bit 1 for slave 
address 1. Bit 0 is not used. If the bit is set, the 
slave is in the poll list. If the bit is clear (0), the 
slave is not in the poll list. 
21  Device With Long Address 
(bit mapped) 
Each bit in this word corresponds to a slave address 
on the network starting at bit 1 for slave address 1. Bit 
0 is not used. If the bit is set, the slave uses the long 
address. If the bit is clear (0), the slave does not use 
the long address. 
22  Current Command  This field contains the index of the current command 
to execute. 
23  Command Request Count  This field contains the total number of request 
messages issued on the channel. 
24  Command Response Count  This field contains the total number of response 
messages received from devices on the network. 
25  Configuration Error Word  Configuration error word (see table) 
26  Current Error Code  Current error code for channel 
27  Last Error Code  Last error code reported for channel 
28  Channel 2 State  Channel 2 state machine value (used for debugging) 
0 Polling 
1 Config 
2 Data Poll 
3 User Poll 
4 Wait Unique ID 
29  Comm State  Channel 2 communication state machine value (used 
for debugging) 
0 Startup 
1 Idle 
2 Transmit Pending 
3 Transmit 
4 Receive 
5 Post Transmit 
6 Idle, Waiting 
30  Device Status (bit mapped)  Each bit in this word corresponds to a slave address 
on the network starting at bit 1 for slave address 1. Bit 
0 is not used. If the bit is set, the slave is in error. If 
the bit is clear (0), the slave is not in error. 
31  Device Poll List (bit mapped)
Each bit in this word corresponds to a slave address 
on the network starting at bit 1 for slave address 1. Bit 
0 is not used. If the bit is set, the slave is in the poll 
list. If the bit is clear (0), the slave is not in the poll list.










