Star Micronics TCP300II Series, Product Specifications Manual

Page: 7 / 67

5
3-3. Transmission Control Matrix (Reader Type)
Event
TCP status
STX received ETX received Other receptions ACK received NAK received No response
1 Idling
→ 2
Read and
discarded → 1
Read and
discarded → 1
Read and
discarded → 1
Read and
discarded → 1
→ 1
2 Command received Buffering → 2 Buffering → 3
If data error
DLE sent → 1
If data normal
buffering → 2
If data error
DLE sent → 1
If data normal
buffering → 2
If data error
DLE sent → 1
If data normal
Buffering
→ 2
→ 2
3 BCC received
If BCC matched
→ 4
If BCC does not
match
NAK sent → 1
If BCC matched
→ 4
If BCC does not
match
NAK sent → 1
If BCC matched
→ 4
If BCC does not
match
NAK sent → 1
If BCC matched
→ 4
If BCC does not
match
NAK sent → 1
If BCC matched
→ 4
If BCC does not
match
NAK sent → 1
→ 3
4 Wait for ACK after
response sent Read and
discarded → 4
Read and
discarded → 4
Read and
discarded → 4
→ 1
Response
resend → 4
→ 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.