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Continuation Software Description
Values Register 0:
Values Register 1:
Value Register 66:
Time constant for communication monitoring.
Register Value = 0 (0x0000) (default) there is no communica-
tion monitoring, all other values are for communication monito-
ring with a solution of 10 ms.
0x0001 to 0xFFFF => 0.01 to 655.35 seconds = 10.9 minutes
Bit
Information
0 = Initial state after Reset or communication
monitoring Triac 1 off
0
1 = Initial state after Reset or communication
monitoring Triac 1 on
0 = Initial state after Reset or communication
monitoring Triac 2 off
1
1 = Initial state after Reset or communication
monitoring Triac 2 on
0 = Initial state after Reset or communication
monitoring Triac 3 off
2
1 = Initial state after Reset or communication
monitoring Triac 3 on
0 = Initial state after Reset or communication
monitoring Triac 4 off
3
1 = Initial state after Reset or communication
monitoring Triac 4 on
"06 (0x06) Write Single Register"
Request
Register Address
0 or 1 or 66
Register Value
Bits 0 – 3 according to tables or
the description above
Response
Echo of the request
"16 (0x10) Write Multiple Registers"
Request
Valid Register Starting Address 0 or 1
Valid Quantity of Registers
2
Byte Count
2 x Quantity of registers
Registers Value
Quantity of registers x 2 Byte
Bits 0 – 3 according to tables
Response
Function Code, Register Starting Address, Quantity of Registers
METZ CONNECT | Im Tal 2 | 78176 Blumberg | Germany | Phone +49 7702 533-0 | Fax +49 7702 533-433
Distributed by RIA CONNECT GmbH and BTR NETCOM GmbH
Mounting instruction see www.metz-connect.com
Continuation Software description
9.2 Bit rate setting with Modbus command
Parity and bit rate have the same value as when setting them by
address switch.
If Parity or Bit has the value 0, no setting or storage is carried out.
The register content is stored in the EEPROM.
"06 (0x06) Write Single Register"
Request
Valid Register Address
0x41 ( 65 )
Valid Register Value 2 Bytes
15 14 13 12 11 10 9
8
7
6
5
4
3
2
0x53
Parity
Bit rate
Bit 15-8: Magic-Number 0x53 = 83 as protection against
accidental writing.
The command will be further analysed only with this
number.
Bit 7-4
1
2
3
Parity even odd none
Bit 3-0
1
2
3
4
5
6
7
Bit rate 1200 2400 4800 9600 19200 38400 57600 115200
Response
Echo of Request
Example for a frame:
Slave address
0x12
Setting of rotary switch (18)
Function
0x06
Write Single Register
Register address Hi
0x00
Register address Lo
0x41
Bit rate and parity (65)
Register contents Hi
0x53
Magic-Number
Register contents Lo
0x15
Parity Even, 19200 Baud
All devices can be switched simultaneously with a Broadcast
command (Slave address 0x00) However, it is advised not to do
so as this can cause problems:
-
Devices from other manufacturers may have under this
address a register for a different purpose that will then
be operated in the wrong way.
-
There is no feedback from the individual devices.
Consequently the control cannot immediately recognize
if the command was correctly received.
It is safer to address and switch each device individually.
The device will then answer with the old settings of parity and
bit rate. Switching will take place only afterwards. However, the
answer can get lost if the bus is disturbed.
When all devices are switched; it is advised to check communica-
tion. Any function of the device providing a feedback is suitable.
If a single function is to be used being independent from the
process periphery then the function „Diagnostic" sub-function
„Return Query Data" is suitable, it returns the transferred data.
If bit rate and parity setting of a device are unknown it is possible
to address the device successively with all combinations of bit
rate and parity until the device answers. Try the most likely com-
binations first. Try the lower bit rates last as they take longer.
Continuation Software description
9.3 General Commands
"08 (0x08) Diagnostics"
Subfunction "0 ( 0x0000) Return Query Data"
Data Field Any
Response: Echo of Request
Subfunction "1 (0x0001) Restart Communication Option"
Data Field 0x0000 oder 0xFF00
Response: Echo of Request
Action: Clears all Error Counters, Restarts node
Subfunction "4 (0x0004) Force Listen Only Mode"
1
0
Data Field 0x0000
No Response
Action: No response until Node Reset or Function Code 08
Subcode 01
Subfunction "10 ( 0x000A) Clear Counters"
Data Field 0x0000
Response: Echo of Request
Action: Clears all Error Counters
Subfunction "11 ( 0x000B) Return Bus Message Count"
8
Data Field 0x0000
Response: Quantity of messages that the remote device has
detected on the communications system since its last restart,
clear counters operation, or power-up.
Subfunction "12 ( 0x000C) Return Bus Communication Error
Count"
Data Field 0x0000
Response: Quantity of errors encountered by the remote
device since its last restart, clear counters operation,
or power-up. (CRC, Length <3, Parity, Framing)
Subfunction "13 ( 0x000D) Return Bus Exception Error Count"
Data Field 0x0000
Response: Quantity of MODBUS exception responses returned
by the remote device since its last restart, clear counters
operation, or power-up.
Subfunction "14 (0x000E) Return Slave Message Count"
Data Field 0x0000
Response: quantity of messages addressed to the remote
device, or broadcast, that the remote device has processed
since its last restart, clear counters operation, or power-up.
Subfunction "15 (0x000F) Return Slave No Response Count"
Data Field 0x0000
Response: Quantity of messages addressed to the remote
device for which it has returned no response (neither a normal
response nor an exception response), since its last restart, clear
counters operation, or power-up.
Continuation Software description
"43 /14 (0x2B / 0x0E) Read Device Identification"
Request
Read Device ID code:
0x01
Object ID 0x00
Response
Device ID code
0x01
Conformity level
0x01
More follows
0x00
Next object ID
0x00
Number of objects
0x03
Object ID 0x00
Object Length
0x03
Object Value
"BTR"
Object ID 0x01
Object Length
0x06
Object Value
"MR-TO4"
Object ID 0x02
Object Length
0x04
Object Value
"V1.0"
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