Features:
- Expands a Series 90-30 controller so multiple SNP masters can reach PLC reference data.
- Handles SNP requests up to 10,000 bytes and datagrams up to 250 bytes.
- Introduces additional engineering and protocol functions across documented hardware revisions.
Revision B and later add LogicMaster communications for programming and data access, while the earlier Revision A hardware does not provide that capability.
Revision C introduces SNP-X utilization, and Revision D adds support for the Change SNP ID communication request, making installed hardware identity important during replacement.
The interface serves program and reference-table access but deliberately excludes transfer of the Series 90-30 system configuration, preserving a clear boundary around its engineering role.
For the legacy Horner APG HE693SNP900 SNP Interface Module, Apter Power offers quotation assistance and access to official Horner product documentation.
Horner APG HE693SNP900 SNP Interface Module Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Serial Interface Setup for HE693SNP900
- Electrical mode: The selected RS-232 or RS-485 setting matches the master port and installed cable network.
- Baud setting: Both endpoints use the same supported communication rate up to 19.2 kbaud.
- SNP identity: The configured slave ID remains unique and consistent with the master application.
- Topology limit: Radio-modem operation is excluded from the supported interface arrangements.
HE693SNP900 Data-Access Boundaries
- Reference access: An SNP master reaches PLC reference data through the added slave path as if connected to the native controller interface.
- Large request: A standard message can address a data block of as much as 10,000 bytes.
- Datagram limit: Datagram requests use a separate 250-byte maximum that cannot be treated as the normal message ceiling.
- Configuration exclusion: The port is not used to transfer the Series 90-30 hardware configuration.
Functional Evolution of HE693SNP900
- Revision A: The initial hardware does not communicate with LogicMaster 90.
- Revision B: Programming and reference-table access through LogicMaster become available.
- Revision C: The interface adds use of the SNP-X protocol.
- Revision D: The Change SNP ID communication request becomes supported.
Series 90-30 Integration of HE693SNP900
- Free slot: The interface occupies an available position in the local PLC backplane.
- CPU baseline: Controller firmware meets the minimum version required for module operation and engineering-tool access.
- Power allowance: The rack budget includes both steady 5 VDC demand and the brief startup inrush.
- Startup sequence: Port parameters are configured before the SNP master application is connected and started.