Serial connection at 9600 8-E-1
Device issues e0 until initialized with 81 40. Initialization code can be sent at any time.
import serial
s = serial.Serial('/dev/ttyUSB0',9600,parity=serial.PARITY_EVEN)
s.write(b'\x81\x40') # init (expect a0 93 40 01 10)
s.write(b'\x82\x06\x77') # get fw info
# these commands just expect an ok response (a0 92 40 00)
s.write(b'\x84\x43\x02\x04\x55')# set zoom 119.5 deg fov
s.write(b'\x8a\x41\x50\x3a\x03\x51\x00\x5a\x7f\x7f\x00') # set position P=97.7 T=21.884 43 02 09 2b # zoom to 119.5 deg fov
8a 41 50 3a 02 0c 00 5a 7f 7f 00 # set position 400 200 64
# API 652 218 1195
# P 65.2 degrees T 21.8 degrees
# Hex to Dec PTZ
# 524 90 127/32639
84 43 02 09 2b # zoom to 119.5 deg fov
8a 41 50 3a 03 51 00 5a 7f 7f 00 # set position 600 200 64
# API 977 218 1195
# P 97.7 degrees T 21.8 degrees
# Hex to Dec PTZ
# 849 90 127/32639
8a 41 50 32 03 51 00 6d 7f 7f 00 # set position 600 100 64
# API 977 109 1195
# P 97.7 T 10.9
# 6d = 109
84 43 02 04 55 # zoom (84 43 02)
# 092b/2347 = 64 / 119.5 deg fov
# 0455/1109 = 32 / 59.7 deg fov
# 022a/554 = 16 / 29.8 deg fov
8a 41 50 32 03 51 00 6d 7f 7f 00 # set position 600 100 32
Breakdown
Send wake up 84 43 02 09 2b
Expect ok a0 92 40 00
Move to 8a 41 50 3a
16 bit pan degrees * 10 - 128 (97.7 = 977-128 = 849 = 03 51)
16 bit tilt degrees * 10 (10.9 * 10 = 109)
??? 7f 7f 00
Not sure, I've tested on MPTZ-6 and MPTZ-9, but I don't have an MPTZ-10. If you have the ability to test, please let me know if it works. This code is unlikely to damage a camera but be careful about how you hook up to it. The full repository is here if you'd like to contribute back: https://github.com/ca0abinary/Polycom-MPTZ-Protocol