Mode 1 (long data mode: set up as 00)：

GID of every instrument can receive info at this mode, and it can specifically

use on data info that is larger than 127Bytes.

Mode 2 (ID: info mode 1：set up as 01)：

Once GID can transmit to particular SID instrument under this mode, it is

one to many; the single info must ≦127Bytes.

Transmission: The first Byte is the SID of the receiver, and from the second

byte, it becomes data.

Example: The SID of device A is 55, the SID of device B is 88, and they have

the same GID. Under mode 2, device A is going to transmit data

0x1234567890, 5 Bytes in total, to B device, A then sends data

0x881234567890, 6Bytes in total to B, B will receive 0x551234567890, 6Byte

in total. The first Byte is the SID of the transmitter.

Mode 3 (ID: info mode 2：set up as 10)：

Once GID can transmit to particular SID instrument under this mode, it is

one to many; the single info must≦127Bytes.

Transmission: Data shall be transmitted under the same rule of the thirteen to

thirty-two Byte.

Example: The GID of device A = AAAA, SID = 55; the GID of device B = BBBB,

SID = 88; the GID of device C = CCCC, SID = 99.

A is going to transmit 0x1234567890 to B, 5 Bytes in total. A then sends

0x04FFBBBB881234567890, 10 Bytes in total, to B, B will receive

0x1234567890,

5 Bytes in total.

A is going to transmit 0x1234567890, 5 Bytes in total, to B via C. A then sends

0x08FFBBBB88FFCCCC991234567890, 14 Bytes in total, C will receive

0x1234567890, 5 Bytes in total, but B will not receive any data.

Mode 4 ( saved ID data mode: set up as 11)：

It can set in advance to save particular GID and SID way, it will transmit it

back referring to the track it is saved. It can forward the track up to fourteen

times, the single info must≦127Bytes.



The twelfth Byte：wrong parameter, it fixed as 0x00.

 The thirteenth ~ the thirty-two Byte：the pre saved track, it only works

under mode 4 (saved ID data mode).



The thirteenth Byte：It shows how much information in the fourteenth

Byte ~thirty-two Byte.

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TRW-V12 Datasheet P.9