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Chapter 4 – Electrical Installation
Installation and Start-up Guide for NMBP-01
4-5
Modbus Plus
The NMBP-01 option module has the standard 9-pin D-shell Modbus Plus
connector on top of the front plate.
The following chapters are used by permission of Modicon. These chapters
are taken from Modicon publication “ Modbus Plus Network Planning and
Installation Guide” (GM-MBPL-001 Rev. D).
Modbus Plus Cable
The cable type specified for network use is:
Manufacturer:
Belden Corporation
Telephone:
(317) 983-5200
Cable Type:
9841
Description: Twisted pair, shielded, with insulating outer jacket NEC/UL
CM (communications) for use in industrial environments
This cable is available from Modicon as the following part numbers:
97-9841-100
MBPlus 100 Foot Reel
97-9841-500
MBPlus 500 Foot Reel
97-9841-01K
MBPlus 1000 Foot Reel
For ordering information, contact Modicon Customer Service at the following
telephone numbers. Ask for Customer Service Order Entry.
North America:
(800) 468-5342
International:
(508) 794-0800
Your cable will run directly between the network device locations. Each cable
segment must be a continuous run between the device connectors at two loca-
tions. The use of splices, taps, splitters, or any other configurations such as
’star’ or ’tree’ configurations, is not allowed. The only allowed media compo-
nents are the network cable and network device connectors.
You will typically plan your cable runs according to the vertical rises and hor-
izontal distances between sites. When you order cable, you will be ordering it
by reels of fixed length. Order reels of sufficient length to allow continuous
runs between the network devices. Provide excess length at each site for ser-
vice loops, strain reliefs, and dressing.