Omron CJ Series Operation Manual page 50

1 Introduction
Item
Connection forms
Remote I/O communications
I/O Communications Manual Startup
Mode
Communications Error Communica-
tions Stop Mode
Communications Error Input Data
Zero Clear Mode
Duplicated Slave Unit address check
1-10
Round Cable II, Flat Cable I, or Flat Cable II cables at a baud rate of
93.75 kbps: No restrictions
Other cables or other baud rates: Trunk line and branch lines
Connections for Slave Units and Repeater Units: T-branch or multidrop
connections
Automatic startup when power is turned ON
*_IOCycleStartCmd (Remote I/O Communications Start Switch) in I/O
Communications Manual Start Mode
*1 This includes when the power is turned ON to the Controller, the Con-
troller is reset, or the Slave Unit communications power is turned ON.
The following are exceptions.
• In Registered Slave Unit Participation Standby Mode, communications
are not started until all registered Slave Units are participating in the
network.
• In Communications Error Communications Stop Mode, communica-
tions stop when a communications error occurs.
I/O Communications Manual Startup Mode can be set from the CX-Inte-
grator so that remote I/O communications are not started when the power
is turned ON. Remote I/O communications will not start until
*_IOCycleStartCmd (Remote I/O Communications Start Switch) changes
to TRUE.
All remote I/O communications are stopped if a communications error
occurs in any Slave Unit.
Note Communications will not stop for verification errors for registration
tables or duplicated address settings.
All input data will be cleared to zeros in any Slave Unit in which a commu-
nications error occurs.
If the same address is set for two different Slave Units or the same mem-
ory is allocated to two different nodes, the Slave Unit that joins communi-
cations last will cause a duplicated address error and will leave the
network. At this time, *_SlavDupErr (Slave Unit Duplicated Address Error
Flag) will change to TRUE.
Note This error will also occur if a Slave Unit leaves the network and then
a different type of Slave Unit joins the network.
CJ-series CompoNet Master Unit Operation Manual for NJ-series CPU Unit (Cat. No. W493)
Specifications
*1
or manual startup using