Symbol Technologies MK1000 - Manual (Page 105)

5-3
PCK Emulation
Host Communication Commands
Table 5-2 lists the commands used in host communications.
PCK Ethernet & RS-232 Communication Protocol
When communicating to the host terminal via Ethernet or RS-232, MK1000 data is
formatted as follows:
Table 5-2. Host Communication Commands
Control Character Hex Representation Description
02 ASCII Start of Text
03 ASCII End of Text
01 ASCII Start of Header
04 ASCII End of Transmission
00-FF Data packet. This is the actual data being
sent to the MK1000. The maximum size of
the packet is 300 bytes, but under 50 is
recommended for accurate communication.
00-FF Used for error detection, LRC is the
Exclusive-OR (XOR) of all characters in
and the .
30-4F The address of the MK1000 when used in a
485 network. Each unit is assigned a unique
address.
05 ASCII Enquiry
06 ASCII Acknowledge
15 ASCII Negative Acknowledge