TS-7970 Terminal Blocks

The TS-7970 includes two removable terminal blocks (OSTTJ0811030) for power, UARTs, CAN, and other general purpose IO.

P1-A Pin # Description 1 Ground 2 STC_485+ (/dev/ttyMAX0) 3 STC_485- (/dev/ttyMAX0) 4 STC_CAN_2_H (can1 interface) 5 STC_CAN_2_L (can1 interface) 6 Power Input (8-28VDC) 7 Power Input (5VDC) 8 Ground	P1-B Pin # Description 1 Ground 2 AD_P10 (4-20mA analog input) 3 AD_P11 (4-20mA analog input) 4 AD_P12 (4-20mA analog input) 5 DIO_1 (30VDC IO) 6 DIO_2 (30VDC IO) 7 RS-232_STC_TXD (/dev/ttymxc4) 8 RS-232_STC_RXD (/dev/ttymxc4)

The DIO_1 and DIO_2 IO can be outputs, or inputs. As inputs the digital threshold is 1.2V. To guarantee low it must be < 0.5V, or for high > 2.0V. There is an internal 1.5k pullup to 5V that will bias the input high. As outputs these IO can sink up to 500mA.