Yokogawa ALP121-S01 PROFIBUS-DP Communication Module, Standard G3 Execution
A CENTUM VP PROFIBUS-DP master module with the S01 ordering execution for standard construction and ISA Standard G3.
Technical Summary
Yokogawa ALP121-S01 is an ALP121 PROFIBUS-DP communication module used as a master for DP slave devices in compatible CENTUM VP N-IO and FIO systems.
The S01 suffix identifies the standard type, the fixed 0 code position and the ISA Standard G3 option. The field interface is an isolated EIA-RS-485-compliant PROFIBUS-DP port on a 9-pin female D-sub connector.
Network speed and allowable segment length are coordinated as one bus design. The controller, node unit, slot position, configurator project and every slave address must remain aligned.
Specifications
Features
Master-side control
The module exchanges cyclic and acyclic data with configured PROFIBUS-DP slave devices.
Isolated field path
The PROFIBUS field interface is isolated from the system side.
DP-V1 services
Supported engineering tools can configure DP-V1 communication and device records.
Redundancy-capable layout
Approved designs can use a matched adjacent-slot module pair with the documented controller configuration.
About IndustryParts
https://www.industryparts.com/Exact-model handling for ALP121-S01
IndustryParts keeps the complete ALP121-S01 identity, requested quantity and installed-system evidence together so the proposed supply can be checked against the actual application before dispatch.
Compatibility
Host hardware
Confirm the exact AFV30/AFV40, A2FV50/A2FV70 or ANB10/ANB11 system position and supported software release.
Bus design
Retain baud rate, segment length, termination, repeaters, cable type, grounding and connector construction.
Device database
Archive the PROFIBUS configurator project, GSD files, slave addresses, module mapping and parameter records.
Replacement
Secure the network record
Export the PROFIBUS project and document topology, addresses, baud rate, termination and redundant pairing.
Match the S01 execution
Verify the complete label, G3 requirement, supported host position and software environment.
Restore and observe
Download the approved configuration, check slave diagnostics and prove cyclic plus required acyclic exchanges.
FAQ
Which host information is needed for a ALP121-S01 spare?
Provide the FCS or node-unit model, slot, CENTUM VP release, ALP121 style, redundancy arrangement and complete S01 label.
Does ALP121-S01 act as a PROFIBUS slave?
No. Its system role is the PROFIBUS-DP master that communicates with configured DP slave devices.
Can bus speed be changed during a ALP121-S01 replacement?
Only through an approved network change. Baud rate, segment length, repeater use and termination are interdependent and must match every participating device.
What files should be archived before removing ALP121-S01?
Keep the PROFIBUS configurator project, GSD files, slave mapping, parameter sets, diagnostic baseline and controller backup.
How is a redundant ALP121-S01 pair accepted?
Verify exact paired placement, primary/standby health, all slave communications and controlled transfer behavior under the approved system procedure.
