4
3, 8, or 16 Axis SERCOS interface Module
Publication
1756-IN572E-EN-P – March 2004
Overview
The 3, 8, or 16 Axis SERCOS interface module serves as a link between the
ControlLogix platform and intelligent drives. The communication link
between the module and the drive(s) is via IEC/EN 61491 SErial Real-time
COmmunication System (SERCOS) using fiber optic medium. Fiber optics
assures reliable high speed data transmission with excellent noise immunity,
improved performance, and elimination of interconnect wiring.
SERCOS is a real-time optical serial interface between the control unit and its
associated drives to transmit periodic and non-periodic data. Its topology is
that of a ring with one master and multiple slaves (axes). The 3, 8 or 16 Axis
SERCOS interface module serves as the interface between one ControlLogix
processor and 1 to 3 axes for the 1756-M03SE, 1 to 8 axes for the
1756-M08SE, and 1 to 16 axes for the 1756-M16SE operating in either
position, velocity, or torque mode. The module has a programmable ring
Cycle Period of 0.5ms, 1ms or 2ms depending on the number of axes and a
ring Data Rate of 4 Mbaud or 8 Mbaud. The module is designed to meet the
Control and Information Protocol (CIP) common specification.
Preventing Electrostatic Discharge
ATTENTION
This equipment is sensitive to electrostatic discharge,
which can cause internal damage and affect normal
operation. Follow these guidelines when you handle
this equipment:
•
Touch a grounded object to discharge potential
static.
•
Wear an approved grounding wriststrap.
•
Do not touch connectors or pins on component
boards.
•
Do not touch circuit components inside the
equipment.
•
If available, use a static-safe workstation.
•
When not in use, store the equipment in
appropriate static-safe packaging.