Hardware Interrupts - Siemens SIMATIC ET 200SP HA Equipment Manual

Maintenance Error
message code
Retentive memo‐ 154
H
ry in carrier mod‐
ule defective
Retentive memo‐ 155
H
ry in the terminal
block defective
Response of the HART configuration changed maintenance message
1
If the HART field device signals "parameter reassignment" (configuration changed) in the 2nd
status byte, the module generates the maintenance message "HART configuration changed". If
the field device withdraws the message in the 2nd status byte within a minute, the maintenance
message is also deleted again by the module. If the message in the 2nd status byte is still set after
a minute, the module then independently sends HART command 38 for resetting the message
in the field device.
A.6

Hardware interrupts

Hardware interrupts
The I/O module can initiate hardware interrupts when limit violations of analog input signals
occur.
Interrupt OBs are called automatically if an interrupt occurs.
You can find detailed information on the event in the hardware interrupt organization block with
the "RALRM" instruction (read additional interrupt information).
The module generates a hardware interrupt at the following events:
• Violation of the low limit 1
• Violation of the high limit 1
• Violation of the low limit 2
• Violation of the high limit 2
The module analog input (channel) that has triggered the hardware interrupt is entered in
variable OB40_POINT_ADDR in the start information of OB40. The figure below shows the
assignment to the bits of local data double word 8.
AI 4xI 2-/4-wire HART ISOL HA
Equipment Manual, 07/2022, A5E50101523-AB
Assignment Meaning / Cause
Module Fault detected in the data block on the carrier
module during operation
Module A memory block error was detected on the
terminal block during operation
Parameters, diagnostics messages and address space
A.6 Hardware interrupts
Remedy
Replace carrier module
Replace terminal block
67