Sensoray 2253 - Manual (Page 14)

Encoder connections
An encoder may be powered by the 2253P (via VCC and GND pins) or from an external
power supply. In the latter case, the power supply return must be connected to one of the
RJ-45 GND pins.
Table 4: Multifunction RJ-45 pinout when used with incremental encoder
Pin Name Description
Connect to
TTL/CMOS RS-422
1 A+ Clock A positive input
Encoder clock A output Encoder clock A+
output
2 A- Clock A negative input no connect Encoder clock A- output
3 B+ Clock B positive input
Encoder clock B output Encoder clock B+
output
4 B- Clock B negative input no connect Encoder clock B- output
5 VCC +5 VDC power, 100 mA maximum
Encoder VCC. Use this for encoders that do not
require VCC current limiting.
6 VCCLIM +5 VDC power via 180 ohm series
resistor
Encoder VCC. Use this for encoders that require
external current limiting.
7 GND Power return/signal ground Encoder GND. These can also be connected to
cable shield if used, or external encoder power
supply if used.
8 GND Power return/signal ground
GPIO connections
Table 5: Multifunction RJ-45 pinout when used as dual digital inputs
Pin Name Description
Connect to
TTL/CMOS RS-422
1 GPIOA
GPIO A positive input GPIO A signal
source GPIO A+ signal
source
2 NC GPIO A negative input no connect GPIO A- signal source
3 GPIOB
GPIO B positive input GPIO B signal source GPIO B+ signal
source
4 NC GPIO B negative input no connect GPIO B- signal source
5 VCC
+5 VDC power, 100 mA maximum VCC for external contacts or other general
use.
6 NC unused no connect
7 GND Power return/signal ground GND for external contacts of other general
use.
8 GND Power return/signal ground
12