GMBHR168 Datasheet, PDF (55/70 Pages) List of Unclassifed Manufacturers – Mini BLOCK Housing 16 opto inputs, 8 Relay outputs

ITALIAN TECHNOLOGY
grifo^®
I²C BUS
Signals used are pin 2 of CN8 (SDA) and pin 3 of CN8 (SCL) as shown in figure 4, connected
respectively to signals MM PIN 12 and MM PIN 13 of socket ZC1.
Signals SDA and SCL are also provided with 4.7 kΩ pull up resistors.
Slave address A0H is not usable by user if the optional Real Time Clock of GMB HR168 (option
.RTC) is installed or is used a grifo^® Mini Module provided with on board Real Time Clock.
OPTOCOUPLED INPUTS
Status of 16 digital optocoupled inputs can be acquired by software by reading the status of
corresponding singals of 40 pins socket, described in table of figure 4.
When NPN or PNP inputs are enabled, corresponding signals are at logic state low (logic 0),
viceversa when inputs are disabled a logic level high is acquired (logic 1).
As previously said, LEDs LD9÷24 give a visual indication of digital inputs status (LED ON means
input actived).
In detail, green LEDs (from LD9 to LD16), visualize optocoupled inputs from IN1-1 to IN8-1 of
group 1 and referring to common pin COM1, while yellow LEDs (from LD17 to LD24), visualize
optocoupled inputs from IN1-2 to IN8-2 of group 2 and referring to common pin COM2.
Summarizing, the correspondance is:
MM PIN 32 , IN1-1 -> LED LD16
MM PIN 31 , IN2-1 -> LED LD15
MM PIN 25 , IN3-1 -> LED LD14
MM PIN 24 , IN4-1 -> LED LD13
MM PIN 23 , IN5-1 -> LED LD12
MM PIN 22 , IN6-1 -> LED LD11
MM PIN 21 , IN7-1 -> LED LD10
MM PIN 19 , IN8-1 -> LED LD9
MM PIN 1 , IN1-2 -> LED LD24
MM PIN 2 , IN2-2 -> LED LD23
MM PIN 3 , IN3-2 -> LED LD22
MM PIN 4 , IN4-2 -> LED LD21
MM PIN 35 , IN5-2 -> LED LD20
MM PIN 36 , IN6-2 -> LED LD19
MM PIN 37 , IN7-2 -> LED LD18
MM PIN 38 , IN8-2 -> LED LD17
DIGITAL TTL I/O
They are pins 2, 3, 4 and 6 of connector CN7, connected respectively to signals MM PIN 5, MM PIN
6, MM PIN 11 and MM PIN 30.
Pin 8 of CN7 can also be used as digital I/O connected to signal MM PIN 33 (if J11 is connected in
position 1-2), but remembering that it is always connected to a 4.7 kΩ pull-down.
In addition, pin 4 is connected to a yellow LED (LD28) that visualizes its status; in case an optional
Real Time Clock is installed this signal is connected to its open collector output /INTRTC and cannot
be used as user digital I/O.
GMB HR168 Rel. 5.00
Page 47