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Page 69
Model T80
Register Value
2 Bytes
0x0000 to 0xFFFF
CRC
2 Bytes
calculated
*N = Quantity of Registers
Error
Modbus ID (Slave Address)
1 Byte
1 to 247 (0x01 to 0xF7)
Error Code
1 Byte
0x86
Exception Code
1 Byte
01, 02, 03 or 04
CRC
2 Bytes
calculated
R
EGISTERS
Per the Modbus Application Protocol Specification (V1.1b)
Name
Meaning (2 bytes each register)
Number
of
Registers
Return
Data
Format
Read
Write
Requires
Storage
Initiate
Register #
dec
hex
Modbus ID (slave address)
Defined as 1 to 247 per the Modbus Application
Protocol Specification (V1.1b)
1
16 bit
Integer
RW
0
00
Data Format
Data Format of the User Bus to the T80 (0-DF8N2, 1-
DF8O1, 2-DF8E1, 3-DF8N1)
1
16 bit
Integer
RW
1
01
Baud Rate
Baud Rate of the User Bus to the T80 (0-1200, 1-
2400, 2-4800, 3-9600)
1
16 bit
Integer
RW
2
02
BusMessage
total message count detected by the slave (remote
device)
1
16 bit
Integer
R
3
03
BusCommunicationsError
total CRC error count
1
16 bit
Integer
R
4
04
SlaveExceptionError
total count of exceptions detected
1
16 bit
Integer
R
5
05
SlaveMessage
total messages addressed to the slave (remote
device)
1
16 bit
Integer
R
6
06
SlaveNoResponse
total count of messages not responded to by the
slave (remote device)
1
16 bit
Integer
R
7
07
SlaveNAK
total Negative Acknowledges returned by slave
(remote device)
1
16 bit
Integer
R
8
08
SlaveBusy
total count of "slave busy" was returned for an
address message
1
16 bit
Integer
R
9
09
BusCharacterOverrun
count of messages that couldn't be handled due to
character over-run condition
1
16 bit
Integer
R
10
0A
Reset all Modbus Error
Counters
Resets all of the Modbus Error counters (defined in
Modbus spec) to 0, Write any value.
1
16 bit
Integer
W
11
0B
Product T80 Model Number
(Modbus)
The Model Number of the Unit polled
1
16 bit
Integer
R
12
0C
T80 Serial Number (hi word)
Unit Serial Number (32 bit integer hi word, bytes 3
and 2)
2
32 bit
Long
Integer
R
13
0D
T80 Serial Number (lo word)
Unit Serial Number (32 bit integer lo word, bytes 1
and 0)
14
0E
T80 Mode
Unit operating mode (1-Startup, 2-Sensor Search, 3-
Operate)
1
16 bit
Integer
R
15
0F
T80 Fault Status
Unit Fault flags, bit defined
1
16 bit
Integer
R
16
10
T80 2nd Fault Status
Unit Fault flags (2nd word reserved, currently not
used)
1
16 bit
Integer
R
17
11
T80 Warning Status
Unit Warning flags, bit defined
1
16 bit
Integer
R
18
12
T80 2nd Warning Status
Unit Warning flags (2nd word reserved, currently not
used)
1
16 bit
Integer
R
19
13
T80 FW Rev
Firmware revision of the Control BD in ASC, ex. " 1".
1
16 bit
Integer
R
20
14
Relay Number to read/write
Relay number to access data (0 - Relay 1, 1 - Relay 2,
2 - Relay 3)
1
16 bit
Integer
RW
21
15
Relay Type
Read/Write Relay Type (0 - Fault Type, 1 - Alarm
Type, 2 - Disabled, 3 - Timed)
1
16 bit
Integer
RW
Y
22
16