Trane Mobrus RTU TR1 Series, Инструкция по эксплуатации

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19
Give the Drive a Coast to Stop Command
A Modbus RTU coasting stop command, when drive parameter 503 is set to allow coasting
stop commands via the serial bus, acts much like a safety interlock. The drive cannot run
in any mode until the coasting stop command is removed. The lower right corner of the
drive’s normal display will show UN. READY when a coasting stop command is active.
Modbus RTU Function: 0F
HEX
(Force Multiple Coils)
Overview:
Note: It isn’t necessary to change the reference value to stop the drive. It also
isn’t necessary to give a reference via Modbus RTU in order to start the
drive.
•
Force coils 1
10
through 16
10
to 0474
HEX
.
This is a coast stop command. Refer to the description of the Control Word. Other
Control Words could also give a coast stop command, depending on the other
functions desired.
Message sent from the Modbus RTU Master to the Drive
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6
Slave
Address
Function Coil Addr.,
High
Coil Addr.
Low
No. of Coils,
High
No. of Coils,
Low
Byte Count
01 0F 00 00 00 10 02
Byte 7 Byte 8 Byte 9 Byte 10
Force Coils
Addr. 0-7
Force Coils
Addr. 8-15
CRC Error Check
74 04 C4 E3
Modbus RTU message string:
[01] [0F] [00] [00] [00] [10] [02] [74] [04] [C4] [E3]
Coast Stop Command: 0000 0100 0111 0100 = 0474
HEX
(See the Control Word Coil Description)
Message returned from Drive to Modbus RTU Master
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Slave Address Function Coil Addr.,
High
Coil Addr.
Low
No. of Coils,
High
No. of Coils,
Low
01 0F 00 00 00 10
Byte 6 Byte 7
CRC Error Check
54 07
Example 5
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