26
Installation
Section 3-2
Note
1.
Always turn OFF the DeviceNet communications power supply and Termi-
nal Unit power supply before setting the switches.
2.
When using simple I/O allocation, a Temperature Controller with a unit
number higher than that set with the rear panel rotary switch cannot be
used.
3.
The data allocated in the IN and OUT Areas is automatically set according
to this setting.
4.
The factory setting of the rear panel rotary switch is 1.
3-2
Installation
Connect the DeviceNet Communications Unit to an E5ZN-SCT24S Basic Ter-
minal Unit and connect the Temperature Controllers to an E5ZN-SCT18S
Expansion Terminal Unit.
When using RS-485 communications, however, connect a E5ZN-SCT24S
Basic Terminal Unit to the leftmost Temperature Controller.
Up to 16 Temperature Controllers can be connected to a single DeviceNet
Communications Unit.
Note Do not connect DeviceNet Communications Units to communications cables
or disconnect them from the cables while the DeviceNet Network is operating.
Abnormal communications may result from short-circuited DeviceNet cables,
loose contacts, or from changing the location of terminating resistance
(DeviceNet) due to changes in the node configuration.
3-2-1
Connecting Terminal Units Together
Terminal Units can be joined together by connecting the side connector on
each Terminal Unit. Connect the required number of Terminal Units together.
E5ZN
UNIT
BPS
POWER
ERROR
SD/RD
OUT1
OUT2
SUB1
SUB2
E5ZN
UNIT
BPS
POWER
ERROR
SD/RD
OUT1
OUT2
SUB1
SUB2
E5ZN
E5ZN
UNIT
BPS
POWER
ERROR
SD/RD
OUT1
OUT2
SUB1
SUB2
E5ZN
UNIT
BPS
POWER
ERROR
SD/RD
OUT1
OUT2
SUB1
SUB2
E5ZN
UNIT
BPS
POWER
ERROR
SD/RD
OUT1
OUT2
SUB1
SUB2
E5ZN
UNIT
BPS
POWER
ERROR
SD/RD
OUT1
OUT2
SUB1
SUB2
E5ZN
UNIT
BPS
POWER
ERROR
SD/RD
OUT1
OUT2
SUB1
SUB2
+
−
+
−
+
−
24
VDC
24
VDC
24
VDC
DeviceNet
Communications Unit E5ZN Temperature Controllers
(16 Controllers max.)
E5ZN-SCT24S Terminal Unit
on left end of each block
E5ZN-SCT18S Terminal Units
on locations other than left
end of each block
RS-485 communications cable
(total cable length: 500 m max.)
(A single-block configuration without RS-485
communications cables can also be used.)
Side
connectors
Summary of Contents for E5ZN-DRT
Page 3: ...iv ...
Page 5: ...vi ...
Page 9: ...x ...
Page 15: ...xvi EC Directives 6 ...
Page 83: ...68 Ladder Programming Examples Section 4 5 ...
Page 123: ...108 Sending Explicit Messages Section 6 5 ...
Page 135: ...120 Message Communications Characteristics Section 7 2 ...
Page 157: ...142 Index Unit status 57 85 user set allocations 43 61 V variable types C0 51 C1 51 C3 52 ...
Page 159: ...144 Revision History ...
Page 161: ...E5ZN DeviceNet Communications Unit Cat No H119 E1 01 OPERATION MANUAL ...