PNMA II - Network TAP - PROFINET / EtherNet/IP Test Access Point 114090003
Networking
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PNMA II IP20 Measuring Point | PROFINET TAP
The PROFINET measuring adapter PNMA II serves as an access point for feedback-free telegram recording in PROFINET networks and further ethernet-based networks under production conditions.
For use in harsh environments or outside the control cabinet, the IP67-certified PNMX variant is available.
PNMA II Features
- If connecting a PROFINET-INspektor® NT via a PNMA II, only two additional patch cables are needed (no crossover cable required).
- In case of a power supply failure, PROFINET communication via the PNMA II remains intact.
- Power supply of additional analytic tools via the UOUT (24VDC) connector
- PNMX IP67 for rough production environments
Comparison: Telegram record during online mode
Recording by port mirroring at the switch
- Advantages:
- No additional hardware required (no PNMA II)
- Disadvantages:
- Time-consuming set-up of the mirror port at the switch
- High load of the switch by the mirror port
- Package losses at high data rates
- Bidirectional mirror port urgently required
- Defective telegrams are not mirrored
Recording by PNMA II
- Advantages:
- No vacant switch port required
- No efforts on connecting a measuring tool
- Unconditionally bidirectional up to 100 Mbps
- Disadvantages:
- Additional hardware
Function
To connect an analysis tool non-reactively (e.g. PROFINET-INspektor® NT or laptop), two monitor sockets are provided (monitor M1 and M2). Thus, it is possible to monitor in parallel both communication directions. An analysis tool is connected to the monitor sockets by two network lines. To analyze and evaluate the measuring results, the telegrams from both communication directions can be superimposed in terms of time. Error telegrams are not rejected by the PNMA II but forwarded.
Properties
- Monitoring of all protocols
- Supports all packet sizes
- No packet loss
- All connection ports on the front panel
- No additional effort to connect a measuring device
- Tested interaction with the PROFINET-INspektor® NT
- No free switch port necessary
- Bi-directional data transmission up to 100 Mbps
- No network interruption when connecting diagnostic tools
