Rockwell Automation 1769-SM2 Compact I/O DSI/Modbus Communication Module - Manual (Page 28)

2-6 Installing the Module
7. Attach an end cap terminator (F) to the last module in the system by
using the tongue-and-groove slots as before.
8. Lock the end cap bus terminator (G).
Important: A 1769-ECR or 1769-ECL right or left end cap must be
used to terminate the end of the serial communication
bus.
Minimum Spacing
Maintain spacing from enclosure walls, wireways, adjacent equipment,
etc. Allow 50 mm (2 in.) of space on all sides for adequate ventilation as
shown:
Allow at least 140 mm (5.5 in.) of enclosure depth to accommodate the
1769-SM2 module.
Panel Mounting
Mount the 1769-SM2 module to a panel using two screws per module.
Use M4 or #8 panhead screws (not included). Mounting screws are
required on every module.
Mounting the Module
!
ATTENTION: Risk of equipment damage exists. During panel or
DIN rail mounting of all devices, be sure that all debris (metal chips,
wire strands, etc.) is kept from falling into the 1769-SM2 module.
Debris that falls into the module could cause damage on power up.
Compact I/O Compact I/O Compact I/O Compact I/O Compact I/O
End Cap or Cab
le
Controller
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Bottom
Side Side