T200 User's Manual SECTION 6: T200 FUNCTIONAL OVERVIEW
PAGE 6-74
6.13.2.4 MONITORING T200 PARAMETERS
Message Transmission to T200
The command code for monitoring a parameter is 01. The data required is:
• Parameter number (least significant byte followed by most)
• Size of parameter to read (2 or 4 bytes).
To monitor a parameter, the following message (series of bytes) should be sent to the T200:
Byte Value Meaning
1 06 Length of command
2 00 Address
3 01 Command (read param)
4 P0 Param no (least significant)
5 P1 Param no (most significant)
6 SZ Parameter size (2/4)
7 CK Checksum
T200 Acknowledgement to Monitor Parameter
The acknowledge ‘data’ for a parameter read command is the ‘value of the parameter’ to be read. The value may be 2 or
4 bytes long, and will be transmitted in the order of least significant to most significant bytes:
Acknowledge Two Byte Parameter Read
Command
Acknowledge Four Byte Parameter Read
Command
Byte Value Meaning Value Meaning
1 06 Length of command 08 Length of command
2 128 Address 128 Address
3 01 Command (read param) 01 Command (read param)
4 02 Ack Status 02 Ack Status
5 D0 Param val (least significant) D0 Param val (least significant)
6 D1 Param val (most significant) D1 Param val (next significant)
7 CK Checksum D2 Param val (next significant)
8 D3 Param val (most significant)
9 CK Checksum
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