MAXIFLEX Hart Input Module Model M1438A 8H Hart Input Module DATASHEET FEATURES • Connects to eight HART loops, each with up to 15 devices Acts as Primary Master in each HART loop Facilitates real-time data acquisition to SCADA and DCS Fits any Maxiflex I/O Slot. Up to 15 M1438A modules in a Maxiflex system. Supports both Burst Mode & Polled Mode Operation Configurable Poll Timers when in Polled Mode Automatic or Manual Polling regime when in Polled Mode Up to 32 Custom Query Blocks per loop can be configured 500Vdc minimum loop isolation to each HART loop. The Maxiflex M1438A 8H is an Input Module that acts as a permanent host interface device (primary master) on up to eight Hart networks simultaneously and is used to acquire data from the HART loops and to make the data available for SCADA, data-logging etc. using the Maxiflex system. The M1438A plugs into an I/O slot on a Maxiflex base and independently interrogates field devices on eight Hart networks, making the data available to the Maxiflex system. This data may be accessed by the entire range of Maxiflex CPU's. (The NIM is designed to be self configuring for ease of use. Once powered up, the NIM searches for HART devices on each of its eight HART interfaces and builds an inventory of devices found. Various data elements are continuously and automatically read from the device and stored in the Data Interchange Table (DIT) in the device for access by the rest of the Maxiflex system. The M1438A handles all HART communications and exchanges data with the system by means of a 8000 register Data Interchange Table (DIT). All system configuration data and dynamic data can be read and written through this convenient table interface. This data is then accessible by the CPU, SCADA, DCS or PLC systems as regular data registers in the system. The link to the HART device is made transparent to the rest of the system. Copyright Omniflex ♦ Subject to change without notice

MAXIFLEX Hart Input Module Model M1438A 8H Hart Input Module ADVANCED FEATURES • Burst Mode – When configured for use in this mode, there can only be One Slave device connected on each loop. Polled Mode(Automatic Polling) – When configured for automatic polling the Master(M1438A) will poll all transmitters up to 15 connected to each loop at the same rate. After seven seconds the Master will search for a device which is NOT online. If the device is found then it will be switched to online. *Note: When Automatic polling is selected the Programmable Poll Timers for each loop are ignored. Polled...

MAXIFLEX Hart Input Module Model M1438A 8H Hart Input Module Specifications HART Loops Eight independent loops Operating Temperature Number of Field Devices Storage Temperature Baud Rate HART operating mode Primary Master 500Vdc loop to loop and loop to logic Electronics conformal coated Maximum Loop Voltage Logic Power Consumption Minimum Loop Resistance From Logic Power Supply Maximum Loop Resistance Transmitted signal level 400mV pk-pk minimum 600mV pk-pk maximum Excluding Packaging Receiver Sensitivity 120mV pk-pk minimum 2000mV pk-pk maximum Including Packaging Ordering Information Receiver...