User Manual DEV 1953
112
Copyright DEV Systemtechnik GmbH 2015-2017
5.8.3.5
Set Crosspoint (S)
The command for switching an output port
ooo
to an input port
iii
has the form
hexadecimal:
02 XX XX 53 XX XX XX
⌡
content:
<STX> <address> S <output ooo>
⌡
hexadecimal:
⌠
XX XX XX 03 XX
content:
⌠
<input iii> <ETX> <checksum>
e.g. for a device with the device address 11 connected to the serial port for
switching output port 1 to input port 2
hexadecimal:
02 31 31 53 30 30 31
⌡
content:
<STX> <address=11> S <output=001>
⌡
hexadecimal:
⌠
30 30 32 03 51
content:
⌠
<input=002> <ETX> <checksum>
The positive response to this command is
hexadecimal:
06 XX XX 53 03 XX
content:
<ACK> <address> S <ETX> <checksum>
e.g. for a device with the device address 11 connected to the serial port
hexadecimal:
06 31 31 53 03 56
content:
<ACK> <address=11> S <ETX> <checksum>
Note:
The DEV 1953 is treated as a 32x16 matrix although it is not possible to switch
e.g. the input ports of the switch module in the first slot to the output port of
the switch module in the second slot. This has to be considered when using the
switch command via the QEC protocol.
The port assignments are:
Switch Module
Slot Number
Output
Port Number
Primary Input
Port Number
Secondary Input
Port Number
1
1
1
2
2
2
3
4
3
3
5
6
4
4
7
8
5
5
9
10
6
6
11
12
7
7
13
14
8
8
15
16
9
9
17
18
10
10
19
20
11
11
21
22
12
12
23
24
13
13
25
26
14
14
27
28
15
15
29
30
16
16
31
32
It is possible to issue a switch command for an empty slot or for a slot
populated with a passive module or with a distribution amplifier module!
Naturally, there is no execution of the switch command even though the
reflected switching status may imply the successful execution.
