27
Unit Configuration Examples
Section 2-4
2-4-1
Connection Precautions
Restrictions on the Number of Units that Can Be Connected
• Unit numbers 0 to 31 can be used for EJ1G-HFU and EJ1G-TC4/TC2
Units.
• Up to 16 Units, including the HFU, can be connected side by side. (EDU
Units are not counted in the number of Units that can be connected.)
Precautions When Using
an HFU
• One HFU can control up to 16 TC4/TC2 Units.
• The unit numbers of the TC4/TC2 Units can be set to between 0 and 31.
• To connect 16 TC4/TC2 Units, Communications Cables must be used to
distribute Unit positioning because the maximum number of Units that can
be connected horizontally will be exceeded.
• When using Communications Cables to distribute TC4/TC2 Unit position-
ing, connect the cables to port B on the End Units.
• If distributed positioning is used for an EJ1G, power must be supplied
separately to the terminal block on the End Units.
Note
When using distributed positioning, turn ON power to the distributed Units first
or turn ON power to the HFU and distributed Units simultaneously. Even if this
is done, there may still be problems with the startup timing depending on the
EJ1G configuration and power supply capacity. If problems occur at startup,
increase the delay between turning ON the power to the distributed Units and
the HFU.
One HFU can manage up to 16 TC Units (4 channels
×
16 Units = 64 channels)
EDU Units are not included in the number of Units that can be managed.
EJ1G-HFU
EJ1C-EDU
EJ1G-TC4
or
EJ1G-TC2
EJ1G-TC4
or
EJ1G-TC2
Up to 16 Units can be connected side by side.
EDU Units are not counted in the number of Units that can be connected.
EJ1C-EDU
Turn ON
pin 8 on
SW2.
Summary of Contents for EJ1G
Page 3: ...iv ...
Page 17: ...xviii ...
Page 21: ...xxii ...
Page 53: ...32 Unit Configuration Examples Section 2 4 ...
Page 69: ...48 Changing SPs During Operation Section 3 3 ...
Page 81: ...60 Other Functions Section 4 5 ...
Page 145: ...124 Other HFU Functions Section 5 7 ...
Page 167: ...146 Detailed Description of Services Section 6 4 ...
Page 229: ...208 Parameters That Can Be Allocated for Programless Communications Appendix ...
Page 237: ......