This Pelco D Protocol manual details command sets, byte formats, and communication specifications for PTZ devices.
The manual describes the Pelco D Protocol used to control PTZ (Pan‑Tilt‑Zoom) units over a serial line. It covers the protocol stack, master‑slave communication principles, and the required hardware interfaces such as RS‑422, RS‑485, and RS‑232.
It provides a complete list of standard and extended commands, response formats, baud‑rate dependent timing tables, and detailed command descriptions. Appendices contain change logs, figure references, and a comprehensive index for quick lookup.
| Command length | 7 bytes |
|---|---|
| Sync byte | 0xFF |
| Address range | 1‑255 (0x01‑0xFF) |
| Checksum calculation | 8‑bit sum of payload bytes |
The sync byte is always 0xFF.
Each command consists of seven bytes.
The checksum is the arithmetic sum of all payload bytes (bytes 2‑6), modulo 256.