The SynScan AZ telescopes are designed to receive control commands set from a computer via the RS-232 port and RS-232 cable.
Once connected, the SynScan AZ can be controlled by most popular planetarium software programs. The SynScan AZ will communicate
with the personal computer at 9600 bits/sec, no parity and stop bit. All angles are communicated with 16-bit angle and communicated
using ASCII hexadecimal.
Description
PC Command ASCII
Hand Control
Response
Notes
Echo
Kx
X#
Useful to check
communication
Goto Azm-Alt
B12AB,4000
#
10 characters sent
B = Command, 12AB =
Azm,
Comma, 4000 = Alt. If
command conflicts with slew
limits, there will be no
action
Goto Ra-Dec
R34AB,12CE
#
Scope must be aligned. If
command conflicts with slew
limits, there will be no
action
Get Azm-Alt
Z
12AB,4000#
10 characters returned,
12AB
= Azm, comma,
4000
= Alt,
#
Get RA-Dec
E
34AB,12CE#
Scope must be aligned
Cancel Goto
M
#
Is Goto in Progress
L
0#
or
1#
0
= No,
1
= Yes: “
0
” is
ASCII character zero
Is Alignment Complete
J
0#
or
1#
0
= No,
1
= Yes
HC Version
V
22
Two bytes representing V2.2
Stop/Start Tracking
Tx
X=0
(Tracking off)
X=1
(Alt-Az on)
X=2
(EQ-N)
X=3
(EQ-S)
#
Alt-Az tracking requires
alignment
32-bit goto RA-Dec
r34AB0500,12CE0500
#
32-bit get RA-Dec
e
34AB0500,
12CE0500#
The last two characters will
always be zero
32-bit goto Azm-Alt
b34AB0500,12CE0500
#
32-bit get Azm-Alt
z
34AB0500,
12CE0500#
The last two characters will
always be zero
40
Appendix A – RS-232 Connection
