Command Code

Description

0x00

ZRQINIT: Request for a receive initialization packet.

0x01

ZRINIT: Receive initialization packet.

0x02

ZSINIT: Send initialization sequence (optional).

0x03

ZACK: Positive acknowledgement (ACK).

0x04

ZFILE: File name from sender.

0x05

ZSKIP: To sender: skip this file.

0x06

ZNAK: Last packet was incomplete.

0x07

ZABORT: Abort batch transfers.

0x08

ZFIN: Finish session.

0x09

ZRPOS: Resume data transmission at this file position.

0x0A

ZDATA: Data packet(s) follow.

0x0B

ZEOF: End of file.

0x0C

ZFERR: Fatal read or write error detected.

0x0D

ZCRC: Request for file CRC and response.

0x0E

ZCHALLENGE: Receiver's challenge.

0x0F

ZCOMPL: Request is complete.

0x10

ZCAN: Other end terminated the session by sending 5 CAN characters.

0x11

ZFREECNT: Request for free bytes on file system.

0x12

ZCOMMAND: Command from sending program.

0x13

ZSTDERR: Output to standard error, data follows.

0x14

ZBADFMT: Data packed format error.

0x15

ZMDM_ACKED: Reserved.

0x16

ZMDM_VIRUS: Error due to virus.

0x17

ZMDM_REFUSE: File was refused, no reason given.

0x18

ZMDM_OLDER: File was refused because it was older.

0x19

ZMDM_INUSE: File is currently in use.

0x1A

ZMDM_CARRIER_LOST: Lost carrier.