▸ Key Features:
• Serial communication interface for SIMATIC S7 and distributed I/O systems
• Supports ASCII and 3964R serial protocols
• Compact module design suitable for tightly packed control enclosures
• Includes industrial certifications for safe operation
• Designed for use in automation networks requiring point-to-point data exchange
▸ Applications:
• Serial device integration
• Machine communication networks
• OEM equipment requiring ASCII messaging
• PLC-to-device data transfer for automation panels
• Industrial systems using legacy or point‑to‑point serial interfaces
▸ Alternative Model Numbers:
6ES7 138-4DF01-0AB0
6ES71384DF010AB0
Siemens 1SI Serial Interface
SIMATIC ET200S Serial Module (general family)
S7 3964/ASCII Communication Interface
▸ Common Misspellings or Phrasing:
6ES7-138-4DF01
Siemens ASCII Module
Siemens 4DF01-0AB0
SIMATIC Serial Port Module
Siemens S7 Serial ASCII Interface
