DC375a GJR2304400R1 ABB Controller Module

Description

ABB DC375a GJR2304400R1 | Operating Mode Controller Module

DC375a GJR2304400R1 is a control module produced by ABB, which is described as follows:

• Product Description: DC375a Operating Mode Controller Module

• Manufacturer: ABB

• Model: GJR2304400R1, possibly GJR2304400R0001

• Weight: 0.2kg

DC375a GJR2304400R1 Some features and parameters:

• Operating Mode of the control module: Operating Mode

• May be used in control systems such as ABB Procontrol P13 and ABB Procontrol P13 Decontic

• Size: 6.0" x 2.0" x 8.0" (15.2cm x 5.1cm x 20.3cm)

GPIO's 8 working modes and applications

1. GPIO's full name is General-purpose input/output, which means universal input/output interface. The PIN can select universal input mode (GPI), universal output mode (GPO) and universal Input /output mode (GPIO) according to practical considerations. The operating modes of GPIO are subdivided into eight, controlled by four 32-bit registers.

2. Hardware block diagram of GPIO port is shown in the figure below:

It should be noted that the following paper will not analyze the working principle of GPIO circuit in detail, but focus on the characteristics of each mode and the specific application in different occasions.

3, 4 input modes

• Floating input mode: In the data channel, only TTL flip-flop (which is used to transform relatively slowly changing analog signals into rectangular signals) is accessed, and then input input data registers. No pull-up/pull-down resistors are accessed in this mode. Mode characteristics: With the pin suspended (no signal input), reading the level of the port is uncertain. Application: external key input /USART RX pin.

• Pull-up input mode: Compared with float input mode, only a pull-up resistor is connected at the front end of the data channel, and the rest is unchanged. Mode features: When there is no signal input, the port potential is clamped by pull-up resistance, and the input level of I/O port is always maintained as high level; When the port input level is low, the I/O port input level is low. Application: When the IO internal pull-up resistor input is required, the external interrupt (IRQ) pin of the device triggers the interrupt condition as falling edge trigger/low level trigger, so that the level is always high when there is no signal input. If an event triggers the interrupt, IRQ can output a low level, thus generating (falling edge/low level) interrupt. For example, the working mode of the IRQ pin of the monolithic wireless transceiver chip NRF24L01 is the pull-up input mode.

• Pull-down input mode: Compared with float input mode, only a pull-down resistor is connected at the front end of the data channel, and the rest is unchanged. Mode features: When there is no signal input, the port potential is pinched by pull-down resistance, and the input level of the I/O port is always kept low; When the port input level is high, the I/O port input level is high. Application: When the internal IO pull-down resistance input is required and the external interrupt (IRQ) pin trigger interrupt condition is rise edge trigger/high level trigger, this port can select the pull-down input mode.

• Analog input mode: The data channel is not connected to any processing unit (TTL trigger/clamp resistor), but directly feeds into the MCU internal processing unit. Mode Characteristics: Compared to other input modes which can only read logical high/low level (digital), this mode can read slightly changed values (analog). Application: ADC analog input/low power consumption.

4. Four output modes

• Push-pull output: The output has a driving capability. When the CPU outputs logic '0', the I/O port outputs a low level, while when the CPU outputs logic '1', the I/O port outputs a high level. It is usually used as an ordinary GPIO to drive electronic components such as LED, nititube or output to control a signal.

• Open leakage output: suitable for current type drive, its current absorption ability is strong. When the CPU outputs logic '0', the I/O port outputs low level, while when the CPU outputs logic '1', the pin is in open leak, that is, floating state (high resistance state), if you want to output high level, you must connect the pull-up resistor. At the same time, the IO port can be changed from the external circuit to the low level or unchanged, you can read the IO input level changes, to achieve the bidirectional function of the I/O port; In addition, it is possible to connect the pins of the multichannel open-and-drain output to a line, and form the "and logic" relationship without adding any device through a pull-up resistor, which is also the principle of I2C, SMBus, and other buses to determine the bus occupancy state.

• Multiplexing push-pull output: In STM32, a single pin can usually be used as a regular GPIO, but there are often multiple multiplexing modules corresponding to the same pin, so when the GPIO is used as a built-in peripheral pin, it is called multiplexing mode. Application: Common internal and external devices (USART TX pin /SPI/PWM output, etc.)

• Multiplexing leak-open output: Same as leak-open output, except that the pin selects the multiplexing function. Application: Common on-chip devices (I2C/SMBus, etc.)

[service contact information]

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Contact Person: Miss Yuan

Company: Guizhou Yuanmiao Automation Equipment Co., LTD

Address: Hongshan Hotel, No.42 Hongshan Lake Road, Beijie Street, Xixiu District, Anshun City, Guizhou Province (Bailing. No. 9, 14th floor, Doubletree by Hilton

① 24-hour email reply (12 hours);

② For shipment to countries outside Asia, please contact the seller.

One year warranty, special discount after sale

The company focuses on DCS, PLC, robot, large servo four systems

The main products are all kinds of module/card, controller, touch screen, servo drive

The company's advantages: the supply of imported original products, professional production of accessories

Fast delivery time, complete supply, The seller has more than $1526000 worth of industrial control products inventory

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