User guide

Appendix B
Serial Control Protocols
A general description of DigiCart/EX Serial Control Interface Protocols is included in this section.
DigiCart/ES-Bus
This section covers a general description of DigiCart/EX ES-Bus interface protocol. The following
Message Summary provides an outline of commands and responses that can be executed via the
Serial Port.
H
OST DEVICE MESSAGE SUMMARY
Add To Playlist Get Preset Info Simulate button
Assign/Clear Preset Get Playlist Info Simulate Knob
Copy Get Timer Info Stop
Create Playlist Loop Cart Info
Display Message Pause Cart Status
Play Cut Info (Find cut - Index)
Erase Play Preset Cut Info (Find cut - Name)
Find cut - Index Record Cut Notes
Find cut - Name Rename Device Info
Get Cart Status Reset Cart Directory Info
Get cut Notes Select Preset Info
Get Device Info Set Cart Info Stack Info
Get Directory Info Set cut Info Timer Info
Complete protocol documentation is available to qualified parties. Authorization as a DigiCart/EX
third party software developer may be discussed by contacting the 360 Systems Customer Service
department.
H
ARDWARE FORMAT
The serial connection is a 4-wire EIA-485 (RS-485) full-duplex channel. EIA-485 is a multi-drop
version of the EIA-422 specification, and is fully compatible.
D
ATA FORMAT
The data format follows the ES-Bus specification in that the data transfer is asynchronous, 8 bits per
byte, even parity, 1 start and 1 stop bit, for a total of 11 bits, 38.4K baud.
In all cases, the message structure is fully compatible with ES-Bus. In general, all messages will be
acknowledged by an ACK if successful or NAK if an error occurred.
34BSerial Control Protocols • 67