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ControlLogix I/O Modules The ControlLogix PLC is supplied on a 1756 Chassis Slot “0” Default PLC Slot “9” ControlLogix I/O Modules The ControlLogix PLC is supplied on a 1756 Chassis All cards will begin with the prefix 1756 Cards fit into slots numbered left to right starting with zero Slot “0” Slot “9” ControlLogix I/O Modules The ControlLogix PLC is supplied on a 1756 Chassis All cards will begin with the prefix 1756 Cards fit into slots numbered left to right starting with zero Standard chassis are 4, 7, 10, 13, or 17 slots Slot “0” Slot “9” ControlLogix I/O Modules Parts Illustration of the ControlLogix I/O Module Item Description Backplane Connector - Interface for the ControlLogix system that connects 1 the module to the backplane Top and Bottom Guides - Guides provide assistance in seating the 2 Removable Terminal Block (RTB) or Interface Module (IMF) cable onto the module Status Indicators - Indicators display the status of communications, module health, 3 and input/output devices. Indicators help in troubleshooting anomalies. Connectors Pins - Input/output, power, and grounding connections are made 4 to the module through these pins with the RTB or IFM Locking Tab - The locking tab anchors the RTB or the IFM cable on the module, 5 maintaining wiring connection Slots for Keying - Mechanically keys the RTB to prevent inadvertently 6 making the wrong wire connections to your module ControlLogix I/O Modules ControlLogix I/O Module IMF Interface ControlLogix I/O Module RTB ControlLogix I/O Modules Analog I/O Modules The main purpose of a PLC analog module is to convert signals from: Continuous to digital Digital to continuous Analog I/O Modules The main purpose of a PLC analog module is to convert signals from: Continuous to digital Digital to continuous Without these types of modules a computer would not be able to communicate with the real world. Analog I/O Modules Modules that convert an analog signal to a digital signal are called ADC type devices. ADC ~ Analog to Digital Converters ADC devices are input cards. Analog I/O Modules Modules that convert an analog signal to a digital signal are called ADC type devices. ADC ~ Analog to Digital Converters ADC devices are input cards. Modules that convert a digital signal to an analog signal are called DAC type devices. DAC ~ Digital to Analog Converters DAC devices are output cards. Analog Input Modules There are many different types of analog input modules that will interface with different types of analog sensors: Thermocouple Load Cells High Frequency RTD (Resistance Temperature Detectors) Analog Input Modules Analog Input Modules Universal Input Module: Thermocouple RTD Resistance Current Voltage Analog Input Modules Universal Input Module: Analog Input Modules BIT rating of a module: Input modules have different bit ratings. Analog Input Modules BIT rating of a module: Input modules have different bit ratings. The bit rating of a card will determine the number of bits used for one word of memory One Word = 16 Bits. Analog Input Modules BIT rating of a module: Input modules have different bit ratings. The bit rating of a card will determine the number of bits used for one word of memory One Word = 16 Bits. The number of bits of a word used will determine how high the word can count. Analog Input Modules BIT rating of a module: Input modules have different bit ratings. The bit rating of a card will determine the number of bits used for one word of memory The number of bits of a word used will determine how high the word can count. Example: One Word = 16 Bits. 8 Bit card can count up to 28 = 255 12 bit card can count up to 212 = 4095 16 bit card can count up to 216 = 65535 Each count represents a bit. A 16 bit card can count up to 65536 bits. Analog Input Modules BIT rating of a module: Analog Input Modules Universal Input Module: Each terminal where a analog signal can connect to is called a CHANNEL. Analog Input Modules Universal Input Module: Each terminal where a analog signal can connect to is called a CHANNEL. How many channels does this module have? Analog Input Modules Universal Input Module: Single Ended connection. Differential connection Analog Input Modules Lab Input Module: 1756-IF16 Analog Input Modules Lab Output Module: 1756-OF6CI Removal under Power Loads of 0 - 500Ω Analog Input Modules Lab Output Module: 1756-OF6CI Removal under Power Wire Moved Loads of 0 - 1000Ω