| Power Supply | 12 to 24 Volts DC |
| Digital Inputs | 22 Inputs with LED indicators (12 to 24V) |
| Digital Outputs | 16 NPN open-collector (current sinking) outputs rated at 200mA each |
| Analogue Inputs | 6 analogue inputs rated at 0V to 10V, 10-bit resolution |
| Communications | 1 × USB device port, 2 × RS-232 ports (TX and RX only), 1 × RS-485 port, 1 × JTAG debug port |
| Real Time Clock | Seconds, minutes, hours, day, month, years, and century Automatic leap year compensation Battery backup |
| Memory | 256k bytes Flash memory for program and data storage 32k bytes SRAM for program and data storage 16k EEPROM for non-volatile storage, general-purpose use SD card socket for SD or MMC memory card |
| Microcontroller | AT91SAM7A3 32-bit ARM microcontroller from Atmel Clock speed 48MHz |
| Mounting | Uses standard DIN rail for mounting |
| Programming | Code is loaded via the JTAG port |
File thiết kế Altium các mạch:
Download the Altium designer PLC source files: OSPLC2_2.zip (795.7kB) – mở bằng phần mềm Altium.
CPU Board
The PLC CPU board is mounted on the IO board with two rows of pin headers.
CPU board schematic: OSPLC2_2_CPU.pdf (37.9kB)
CPU board outline and dimensions: OSPLC2_2_CPU_outline.pdf (276.4kB)
CPU Board Plugged into IO Board
CPU Board Bottom Showing RTC Backup Battery and SD Card Socket
IO board
The I/O board has components mounted on both sides of the board.
I/O board schematic: OSPLC2_2_IO.pdf (75.8kB)
I/O board outline and dimensions: OSPLC2_2_IO_outline.pdf (113.3kB)
IO Board Top View
IO Board Bottom View
Status Board
Status board schematic: OSPLC2_2_Status.pdf (15.1kB)
Status board outline and dimensions: OSPLC2_2_Status_outline.pdf (33.4kB)
Status Board Top View
Status Board Bottom View
Nguồn: https://startingelectronics.org/
