QUICKDESIGNER Modicon •
••
• 161
IRaaaaa Input register
ORaaaaa Output register
OSaaaaa Output register, Signed
ONaaaaa Output register, Negitive
MSaaaaa Output register, Text
DRaaaaa Output register, Double
LUaaaaa Output register, Long
LSaaaaa Output register, Long, Signed
FRaaaaa Output register, Float
ILUaaaaa Input register, Long
ILSaaaaa Input register, Long, Signed
IFRaaaaa Input register, Float
ODaaaaa Output Discrete
IDaaaaa Input Discrete
Note: The Sixnet extensions are not supported on all Modbus devices. Use these extensions ONLY
with those devices designed to utilize the extended variables.
Examples:
MODICON QUICKPANEL
00001 OD0001
01236 OD1236
10001 ID0001
10256 ID0256
30001 IR0001
34096 IR4096
40001 OR0001
49999 OR9999
Modbus Plus
Modbus Plus is a local area network system designed for industrial control applications. A network is a
group of nodes on a signal path that is accessed by the passing of a token. A token is a group of bits
that is passed in sequence from one device to another on a single network, to grant access for sending
messages. While holding the token, a node initiates message transactions with other nodes. Each
message contains routing fields that define its source and destination. A node is any device that is
physically connected to the Modbus Plus cable. Up to 32 devices can connect directly to the network
cable over a length of 1500 feet. Each node is identified by a unique address assigned by the user.
The network bus consists of twisted-pair shielded cable run in a direct path between successive nodes.
The minimum cable length between any pair of nodes must be at least 10 feet. The maximum cable
length between two nodes is the same as the maximum section length of 1500 feet. The node at each
end of a section uses a terminating connector, which provides resistive termination to prevent signal
reflections on the network bus. Terminating connectors have a molded shell that is light gray in color.
The other nodes use an inline connector which is dark gray.
Network cables are NOT supplied by Total Control Products, Inc. Order the following cables from
your Modbus Plus distributor.
Inline Connector, AS-MBKT-085
Terminating Connector, AS-MBKT-185.
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