0000012982 00000 n All units are running Modbus RTU protocol, 19200 Baud, 8N1. Local and remote communications, MODBUS RTU via RS485/232. 0000031951 00000 n startxref 0000044207 00000 n &. In the RPi config, ensure the uart is enabled, 4. A1 RTU-2 1 7.5 Ton R410A PKGD Unitary Gas/Electric YHC092FWRYA--Product Data - 3-10 Ton R410A PKGD Unitary Gas/Electric Rooftop Item: A1 Qty: 1 Tag(s): RTU-2 DX cooling, gas heat High efficiency Convertible configuration - Horizontal 7.5 Ton Dual compressor 575/60/3 Microprocessor controls 3ph Gas Heat – Modulating (4:1 Turndown ratio) The various modules that support RS485 have the Direction Control GPIO Pin defined as: GPIO 25 = PI-SPI-RS485GPIO 25 = PI-SPI-DIN-RTC-RS485GPIO 25 = PI-SPI-DIN-2x4MIO (Require GPIO Pin 17 set high for RS485)GPIO 25 = PI-SPI-DIN-4AI-4KO-8DI )Requires GPIO 17 set high for RS485)GPIO 17 = PI-SPI-DIN-4000, This method works equally well with libmodbus or minimalmodbus. endstream endobj 15 0 obj <> endobj 16 0 obj <> endobj 17 0 obj <>stream �Aft��2꽂�� 4o� をrtu-aと表記する場合があります。 User interface: 12-key keypad set point entry, alarm acknowledgment, start, stop, reset, etc. The program is called "modbusd"  and can be downloaded here: The following code examples were created using a Raspberry Pi 4, the PI-SPI-DIN-RTC-RS485 module, the VP-EC-8AI 8 Channel Analog Input RS485 Modbus RTU Interface (Modbus ID 1), and the VP-EC-RDU-MINI LCD Display (Modbus ID 100). Check here for special coupons and promotions. The RS485 standard is widely accepted in industrial automation along with the Modbus RTU protocol. 0000069121 00000 n 0 #!/usr/bin/env python3import minimalmodbusimport timeinstrument = minimalmodbus.Instrument('/tmp/modbus', 1)  # port name, slave address (in decimal)display = minimalmodbus.Instrument('/tmp/modbus', 100)  # port name, slave address (in decimal)display.serial.timeout = .1a1 = instrument.read_register(16, 0, 4)  # Registernumber, number of decimalslcd_line_1 = ("a1= %6.2f mA " % (a1/100))print(lcd_line_1)# write the display with spacesfor i in range(0, 40):    display.write_register(i, 0x2020, 0)display.write_string(0, lcd_line_1, 7), 1. endobj

endstream endobj 19 0 obj <>stream Upload/download capabilities for configurations and set points. 0 7. When an out-of-limits event occurs, the controller will stop, shut-down or control equipment to change conditions. $E}k���yh�y�Rm��333��������:� }�=#�v����ʉe The Centurion Configurable Controller is a control and monitoring system.

0000008010 00000 n All rights reserved. However, when using Modbus application libraries that do not have direct access to the direction control GPIO line, we have come up with a solution. 0000001434 00000 n Effortlessly connect fieldbus devices to a PROFINET network with our MGate industrial PROFINET gateway solutions. Here is an excerpt from Wikipedia: RS-485, also known as TIA-485(-A) or EIA-485, is a standard defining the electrical characteristics of drivers and receivers for use in serial communications systems.

Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Expandable system to meet most three-stage compressor applications. Using RS845 Modbus RTU Devices with the Widgetlords Electronics Products The RS485 standard is widely accepted in industrial automation along with the Modbus RTU protocol. 0000001792 00000 n ���+�����oʤ�Žߓ�jw�.�(�:����[���&���`�ф_���pz���L�>Dr��j��{�2I��"��C#M�>�� �'�`l��Z����z����3U6��z]�?��g����?��u����d8���%��d�i|�PZ:)(h��aZSb~ h�b```f``R��n ��$Y8��@$`�b�&~�3B��w�8�� ��( T4, Class I, Zone 2, AEx ec ic [ic] IIC T4 Gc, Ex ec ic [ic] IIC T4 Gc X, Operating temperature: -4° to 140° F (-20° to 60° C), MV-7T, 15 W max 10-30 VDC (36 W max with modules), MV-10T, 22 W max 10-30 VDC (52 W max with modules), MV-12T, 23 W max 10-30 VDC (57 W max with modules), MV-7T, 800x480 pixels, 7” widescreen, brightness 1000 cd/m2, MV-10T, 640x480 pixels, 10.4” screen, brightness 2500 cd/m2, MV-12T, 1280x800 pixels, 12” widescreen, brightness 1600 cd/m2, User interface: resistive analog touchscreen, 2x USB host type A (file transfer, datalogging, USB device), EN 61326-1 Immunity to Industrial Locations Emission CISPR 11 Class A, cULus Listed for Ordinary Location: File  #E302106, cULus Listed for Hazardous Location: File #E317425, Class I, Division 2, Groups A, B, C and D, Type 4X Outdoor Enclosure rating (Face only), ABS Type Approval for Shipboard Applications. NOTE: When setting up the Modbus Server Serial Port, ensure to enter the "/tmp/modbus" port name as shown in the following example, Simple Flow reading the first 8 Holding Registers of the VP-EC-8AI using Function 3, PI-SPI-8AI+ Raspberry Pi with 32 Channels of Analog Inputs, SDAFE-HART Analog Front End with HART Compatible Modem, Node-RED and the PI-SPI-DIN-RTC-RS485-4AI-4KO-8DI. 0000000015 00000 n 2. load the "modbusd" executable program into a file folder or desktop, 3. <>stream Holding Registers 0 thru 7 are the Calibration FAULT AD COUNTS for inputs 1 thru 8Holding Registers 8 thru 15 are the Calibration 4mA AD COUNTS for inputs 1 thru 8Holding Registers 16 thru 23 are the Calibratoon 20mA AD COUNTS for inputs 1 thru 8, Input Registers 0 thru 7 are the Raw AD COUNTS for inputs 1 thru 8Input Registers 8 thru 15 are the Percentage values (x10) for inputs 1 thru 8Holding Registers 16 thru 23 are the mA Reading (x100) for inputs 1 thru 8, NOTE: In each example, the serial port is set to /tmp/modbus which is set by the modbusd program which controls the RS485 Direction Control GPIO pin, #!/usr/bin/env python3import minimalmodbusinstrument = minimalmodbus.Instrument('/tmp/modbus', 1)  # port name, slave address (in decimal)a1_ad = instrument.read_register(0, 0, 4)  # Uses Function 4a1_percent = instrument.read_register(8, 0, 4) # Uses Function 4a1_mA = instrument.read_register(16, 0, 4) # Uses Function 4print("a1 = %d ad counts" % a1_ad)print("a1 = %.2f %% " % (a1_percent/10))print("a1 = %.2f mA" % (a1_mA/100)), #!/usr/bin/env python3import minimalmodbusinstrument = minimalmodbus.Instrument('/tmp/modbus', 1)  # port name, slave address (in decimal)a1_cal_ad_fault = instrument.read_register(0, 0)a1_cal_ad_4ma = instrument.read_register(8, 0)a1_cal_ad_20ma = instrument.read_register(16, 0)print("a1 cal fault = %d ad counts" % a1_cal_ad_fault)print("a1 cal 4 mA  = %d ad counts" % a1_cal_ad_4ma)print("a1 cal 20 mA = %d ad counts" % a1_cal_ad_20ma)\, #!/usr/bin/env python3import minimalmodbusinstrument = minimalmodbus.Instrument('/tmp/modbus', 1)  # port name, slave address (in decimal)for i in range(0,8):    instrument.write_register(i,325)a1_cal_ad_fault = instrument.read_register(0, 0)a1_cal_ad_4ma = instrument.read_register(8, 0)a1_cal_ad_20ma = instrument.read_register(16, 0)print("a1 cal fault = %d ad counts" % a1_cal_ad_fault)print("a1 cal 4 mA  = %d ad counts" % a1_cal_ad_4ma)print("a1 cal 20 mA = %d ad counts" % a1_cal_ad_20ma). These code examples use the VP-EC-8AI Modbus RTU RS485 interface as a test unit. USB 1.1 support for laptops without a serial port. $O./� �'�z8�W�Gб� x�� 0Y驾A��@$/7z�� ���H��e��O���OҬT� �_��lN:K��"N����3"��$�F��/JP�rb�[䥟}�Q��d[��S��l1��x{��#b�G�\N��o�X3I���[ql2�� �$�8�x����t�r p��/8�p��C���f�q��.K�njm͠{r2�8��?�����. 1 Press (5VDC) Compr.

Userspace application code normally drives the direction bit of the RS845 transceiver. Here is an excerpt from Wikipedia: RS-485, also known as TIA-485(-A) or EIA-485, is a standard defining the electrical characteristics of drivers an 0000070089 00000 n hތTIo�@��W��P��y��>��T����`�@��Mm�(��olH]T!��o��ª �Ye��l r�A�g8�D�TB,-�%d� ����

�tq�X)I)B>==���� �ȉ��9. 0000077425 00000 n RTU 18 TRANE YC180E4L 250,000.0 Btu/h 203,000.0 Btu/h 0.81 0.8 A 188,800.0 Btu/h 133,200.0 Btu/h - 11.0 6000 CFM 0.80 in-wg 2.67 4.8 A 2 26.3 A 189.0 A 3.2 A 6000 CFM 0 CFM 0.50 in-wg 8.6 A 480 V 3 60 Hz 43.7 A 49.8 A 69.4 A 3617 100% MODULATING POWER EXHAUST, SPRING ISOLATION CURB



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