YSSC3P/YSSC3HP — SSCNET III (/H) Interface Adapter for LinuxCNC

YSSC3(H)P is a PCI interface adapter compatible with Mitsubishi MR-J3/J4 SSCNET III (III/H) network servo amplifiers. It supports up to 16 connected drives in position or velocity control mode. The card also features general-purpose I/O headers for connecting to limit switches and relays. The software includes LinuxCNC 2.7 driver module and an optional patch for absolute encoder support.

SSCNET is a synchronous high-speed network for servo drives and motion controllers. SSCNET only requires a simple daisy chain wiring between servo amplifiers. See Mitsubishi documentation for details.

Specifications

Compatible drives for YSSC3P

1) in J3 compatibility mode

Compatible drives for YSSC3HP

2) not tested yet

Board layout

The card layout showing connectors and indication LEDs:

LEDs

Connectors

Jumpers


Jumpers

J1 — CN2 power
1-2CN2 pins 18, 20, 22, 24, 26 connect to GND
2-3--//-- to +5V*
* +5V is sourced from PCI connector via 500mA self-resettable fuse

J2 — JTAG
1TCK2GND
3TDI4TDO
5TMS6VCC 3.3V


Digital inputs

CN1 contains 12 optoisolated digital inputs. External 24VDC field power supply is required for operation. Example connection of open-collector outputs or mechanical switches is shown on schematics. Inputs can be either common anode or cathode. They are divided into 2 groups: 0-7 and 8-11

CN1
1IN02IN1
3IN24IN3
5IN46IN5
7IN68IN7
9IN810IN9
11IN1012IN11
13COM0-714COM8-11

Example connections:


Digital outputs

CN3 has 8 open-drain outputs from NCV7240 IC. Each output is rated to 600mA/36V max.

CN3
1OUT02OUT1
3OUT24OUT3
5OUT46OUT5
7OUT68OUT7
9GND10GND

Example connections:


Expansion

CN2 connector is intended for daughter boards.

All IN12..IN28 lines are 3.3V LVTTL and are 5V tolerant.

Pins 18, 20, 22, 24, 26 optionally provide 5V power to external devices. The power is taken from the PCI bus and fused to 500mA.

CN2
1IN282IN27
3IN264IN25
5IN246IN23
7IN228IN21
9IN2010GND
11IN1912GND
13IN1814GND
15IN1716GND
17IN1618GND or +5V
19IN1520GND or +5V
21IN1422GND or +5V
23IN1324GND or +5V
25IN1226GND or +5V*
* depends on J1 position, up to 500mA (fused)

Alternative CN2 pins functions depend on the mux configuration