“PASSWORD NOT OPEN”

-If the Password in the MSM400 control unit memory is set “CLOSED”, then it will not be possible to load data from the SAFE or OFFLINE register. The Password protects the data in the MSM400.

“INVALID ACTION NOT THE SAME INSTRUMENT”

-If an attempt is made to transfer SAFE register data to the WORKING register of an MSM400 control unit which is not the origin of the SAFE register data, this will not be allowed. The message indicates that D731 on the currently connected loop is not the same as the D731 in the SAFE register.

“INSTRUMENT IN MULTIDROP MODE”

-The current output control circuitry in the MSM400 control unit is only active when the MSM400 is operating as a 0-20 or 4-20mA device. In a multidrop configuration the current is set to 4mA, and trimming and current set commands are inoperative.

D.10.3Communication Errors

Communications between the MSM400 control unit and the SMART interface/Psion organiser are subject to error checking and acknowledgement signals according to the HART protocol. This means that only valid messages are accepted, and if the message is invalid then it will be rejected.

The screen of the LCD will indicate if a message has not been received correctly. This is perhaps most likely to be seen when the Display parameters are being used, since these are updated with a new value in a message every 0.5 seconds. If the message is received incorrectly, the second and third lines of the display will show one of the following messages:

VERTICAL PARITY ERROR IN REPLY

OVERRUN ERROR IN REPLY

FRAMING ERROR IN REPLY

LONGITUDINAL PARITY ERROR IN REPLY

BUFFER OVERFLOW IN REPLY

Which describe the cause of the fault.

There is an identical group of errors in the outgoing message:

VERT PARITY ERROR IN OUTGOING MESSAGE

OVERRUN ERROR IN OUTGOING MESSAGE

FRAMING ERROR IN OUTGOING MESSAGE

LONGDNL PARITY ERROR IN OUTGOING MESSAGE

BUFFER OVERFLOW IN OUTGOING MESSAGE

If this occurs frequently, it is appropriate to check the electrical connections to the instrument loop, the presence of the SMART load resistor and that the SMART Communicator is attached at the correct position in the loop.

The “IN OUTGOING MESSAGE” group of error messages if displayed while accessing the Programme Parameters implies that the message from the SMART Communicator was not received correctly by the MSM400. Therefore the instructions in the message would have been rejected, and the Parameters remain unchanged at their previous value. This previous value will be shown on the LCD screen on the SMART Communicator after the error message, to prompt the operator to repeat the last parameter value amendment. During a Register transfer this message will automatically cause the Communicator to hold transmission, and suggest a retry because of the error.

The “IN REPLY” group of error messages if displayed when programming the instrument, signals a more significant communications failure. This indicates that the acknowledgement of the change instruction sent to the MSM400 was incorrect. It is not known whether the Parameter value in the MSM400 was changed or not. The SMART Communicator assumes that it was not changed, and reverts to the original

IP258

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Emerson IP258 manual Password not Open, Invalid Action not the Same Instrument, Instrument in Multidrop Mode
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IP258 specifications

The Emerson IP258 is an advanced industrial monitoring device designed to enhance operational efficiency and ensure optimal performance in various industrial applications. It is particularly suited for monitoring, controlling, and managing processes across diverse industries such as oil and gas, pharmaceuticals, food and beverage, and water treatment.

One of the main features of the IP258 is its robust and flexible architecture, enabling seamless integration with a wide range of field devices, sensors, and control systems. This adaptability ensures that the device can be tailored to specific operational needs, thus streamlining processes and enhancing reliability. Its modular design allows for easy upgrades and expansions, making it a cost-effective solution for companies looking to future-proof their investments.

The IP258 boasts advanced communication technologies, including support for various industrial protocols such as Modbus, Ethernet/IP, and Profibus. This versatile communication capability facilitates real-time data sharing and interoperability between different systems, promoting a cohesive operational environment. The device is equipped with multiple input and output options, which further enhances its functionality and connectivity with existing infrastructure.

Another standout characteristic of the Emerson IP258 is its user-friendly interface, which simplifies operation and minimizes training requirements. The intuitive graphical interface allows operators to easily visualize system performance, access historical data, and quickly identify anomalies. This ease of use not only ensures efficiency during normal operations but also aids in rapid troubleshooting and issue resolution.

The device is designed with high reliability and durability in mind, featuring superior environmental resistance to withstand harsh industrial conditions. Its rugged housing and advanced components ensure long-term performance, reducing the likelihood of unexpected downtime and maintenance costs.

In addition, the IP258 incorporates built-in data logging and analytics capabilities, enabling users to gather insights into operational trends and performance metrics. This feature is essential for predictive maintenance and proactive decision-making, ultimately driving productivity and minimizing operational risks.

Security is another priority in the design of the Emerson IP258. The device includes a comprehensive suite of cybersecurity measures to protect sensitive data and prevent unauthorized access, ensuring that operational integrity is maintained at all times.

Overall, the Emerson IP258 stands out as a powerful and versatile tool for industrial monitoring and control, combining advanced features, robust technology, and user-friendly design to meet the demands of modern industrial environments.
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