Star Micronics Dot Impact Printer - Manual (Page 97)

5-7
STAR Command Specifications
Rev. 0.70
5-1-4 Printer Status Transmission Specification when using Ethernet and Wireless LAN
Interfaces
The following explains the printer status transmission specification when using Ethernet and wireless LAN interfaces.
1) Transmission Format:
• When transmitting only STAR ASB:
STAR ASB (Second byte Bit-7=1) + Length (Length = 0x0000)
• When transmitting printer status other than STAR ASB:
STAR ASB (Second byte Bit-7=1) + Length + Status Data
<Length Details>
• 2 byte value indicating status data byte count (0x0000 ≤ Length ≤ 0x0200)
• When the status data is 10 bytes: Length = 0x000a
• When transmitting only STAR ASB: Add Length = 0x0000
• When STAR ASB Second byte Bit-7, and Length is added, Bit-7 = 1 is set.
For status analysis, the total byte count of ASB is detected using the first byte of STAR ASB, and whether length is
added with the second byte Bit-7 of STAR ASB is detected. By getting the byte count of subsequent status data using
the length, the status can be analyzed.
2) Status Data Transmission format
Status Type + Break Character 1 + Data Type + Status Length + Printer Status + Break Character 2
A. Status Type (2 byte or 4 byte)
• First and second bytes
Indicate a factor of printer status occurring.
• ”00”:
Reserved
• “01” to ”09”: Star real-time status request command
• ”10” to ”49”: Star status request command
• “50”:
Reserved
• “51” to ”59”: Reserved
• “60” to ”99”: Reserved
• “A0” to “FF”: Reserved
• Third and fourth bytes
If the factor is the command, indicates the n parameter of the command.
If there is no n parameter, the third and fourth bytes can be omitted.