ETEL Doc.- Hardware Manual # DSC2P / Ver H / 6/1/11
DSC2P Hardware Manual
33
Caution:
To respect the 'Standard safety of information technology equipment' standard (EN
60950, UL 60950), the serial cable used between the controller and the computer must
have an insulation protection (except if the auxiliary and power input are lower than
50VDC).
If you want to manufacture your own RS232 communication cable, you should wire it as shown below:
3.3.4
Connector JC4: Download key
This connector is used for the download key. If the DSC2P does not switch to 'wait for program', there is an
hardware override possibility to force this mode. To do so, plug the download key into the JC4 connector, switch
off and on the controller, and the DSC2P will switch to 'wait for program' in order to download a new firmware
in the DSC2P.
A download key is a 8 pins RJ-45 male connector, with a bridge between pins 5-6:
Remark:
(*)
: these signals are only available from the firmware version 1.14B and activated with bit 0 of
K100 parameter.
If bit 0 of K100 is cleared, the sine and cosine signals are available
If bit 0 of K100 is set, the STI signals are available
The download key of the DSC2P is compatible with the DSC2V, DSCDP and DSCDL key.
Refer to the corresponding
’Operation & Software Manual’
for more information about the STI.
RJ-45, 8 pins, female
DOWNLOAD KEY
Pin #
Signal
Function
1
SIN+ (*)
STI+ (*)
Indicates when the analog encoder’s sine + signal goes through 0 (TTL signal)
Slow time int signal (6 kHz) active on a low state (TTL signal)
2
SIN- (*)
STI- (*)
Indicates when the analog encoder’s sine - signal goes through 0 (TTL signal)
Slow time interrupt - signal (6 kHz) active on a low state (TTL signal)
3
COS+ (*)
STI- (*)
Indicates when the analog encoder’s signal goes through 0 (TTL signal)
Slow time interrupt - signal (6 kHz) active on a low state (TTL signal)
4
COS- (*)
STI+ (*)
Indicates when the analog encoder’s cosine - signal goes through 0 (TTL signal)
Slow time int signal (6 kHz) active on a low state (TTL signal)
5
DWL +
Sets the DSC2P to 'wait for program' (download) if connected to 0V
6
GND
Auxiliary supply output (0V)
7
Reserved
Do not connect
8
Reserved
Do not connect
To the PC (serial port):
D-SUB connector,
9 pins, female
To the DSC2P (JC3):
RJ-45 connector,
8 pins, male
Insulation
protection
1
6
7
8
2
3
5
Download key (JC4) :
RJ-45 connector,
8 pins, male
5
6
DWL
JC4
1
8
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