Transmission Control Matrix (Reader Type) - Star Micronics TCP300II Series Product Specifications Manual

3-3.

Transmission Control Matrix (Reader Type)

Event
STX received
TCP status
1 Idling
→2
2 Command received Buffering → 2
If BCC matched
→ 4
3 BCC received If BCC does not
match
NAK sent→ 1
4 Wait for ACK after Read and
response sent discarded→ 4
When a priority command, such as Reset command, is sent while another command is being executed, that command is canceled, and a priority
command response is returned.
ETX received Other receptions
Read and Read and
discarded→1 discarded→1
If data error
DLE sent → 1
Buffering → 3 If data normal
buffering → 2
If BCC matched If BCC matched
→ 4 → 4
If BCC does not If BCC does not
match match
NAK sent→ 1 NAK sent→ 1
Read and Read and
discarded→ 4 discarded→ 4
5
ACK received NAK received
Read and Read and
discarded→1 discarded→1
If data error If data error
DLE sent → 1 DLE sent → 1
If data normal If data normal
buffering → 2 Buffering → 2
If BCC matched If BCC matched
→ 4 → 4
If BCC does not If BCC does not
match match
NAK sent→ 1 NAK sent→ 1
Response
→1
resend → 4
No response
→1
→2
→3
→4