Honeywell XYR 5000 LINE User Manual

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Subfunction Code
Transmitter Device Status
12  Return Bus Communication Error Count 
13  Return Bus Exception Error Count 
14  Return Slave Message Count 
15  Return Slave No Response Count 
16  Return Slave NAK Count 
17  Return Slave Busy Count 
18  Return Bus Character Overrun Count 
19+ NOT 
USED 
 
Note that identical information is returned for any device ID that the Base Radio has 
control of (i.e. including Transmitters mapped to virtual device IDs when operating in the 
device ID mapping mode (See Section 6.2). 
6.3.3  Command 11- Get Com Event Counter 
This command returns a two-byte status word and the device’s event counter. The status 
word will either be 0 or 65535 if the previous command is still being processed. The event 
counter is incremented for each successful message received. The counter is not 
incremented for commands that return exception responses or commands that fetch 
event counters. The event counter will eventually roll over to 0 after reaching a count of 
65535. Note that identical information is returned for any device ID that the Base Radio 
has control of (i.e. including Transmitters mapped to virtual device IDs when operating in 
the device ID mapping mode). 
For further details on this command, please consult the Modbus protocol specification. 
6.3.4  Command 12- Get Com Event Log
 
This command returns a status word, communications event counter, message count, 
and a field of bytes from the communications event log. The status word and 
communications event counter are identical to those returned by Command 11 (Get Com 
Event Counter) above. The message count is a count of the total number of messages 
received by this device, including messages intended specifically for this device as well 
as other devices on the Modbus network. The event log keeps track of information on the 
last 7 communications events. Note that identical information is returned for any device 
ID that the Base Radio is controlling (including Transmitters mapped to virtual device IDs 
when operating in the device ID mapping mode). 
For further details on this command, please consult the Modbus protocol specification. 
6.3.5  Command 17- Report Slave ID 
This command returns the device type, device status, and a run indicator status byte. The 
16-bit device type and device status words are identical to those held in the holding 
registers. The run indicator status byte is 255 (0xFF hex) if the device is online and 0 
(0x00 hex) if the device is offline. Unlike some of the other diagnostics commands, 
different information is returned depending on whether the device ID used in this 
command corresponds to the Base Radio or one of the Transmitters mapped to a device 
ID when operating in the device ID mapping mode. 
For further details on this command, please consult the Modbus protocol specification. 
 
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