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(2) Connection of Communication cable
Use a shielded twist-pair cable for communication and ground the shielded cable at single end as a general rule.
However, ground the cable appropriately according to noisy environment because the effect may depend on how to
ground. Branch of cable is not allowed. The following figure shows an example that the master module is connected to
an end of the twist-pair cables. The master module can be also arranged not to an end but to the middle.
[Connection method 1] Normal connection method
Even if a slave module is powered off, it is possible to continue communication between a master module and
other slave modules while operating. Please refer to Section 6.5 for details.
Master (EH-TRMME)
Communication
connector
1] A
2] B
3] SHD
4] A
5] B
6] SHD
No. is the pin
number.
[Connection method 2] Connection method when enabling the replacement of slave module while operating
By plugging 2 cables to the connector beforehand, the disconnected state can be prevented and the operation can
be continued even if the connector is pulled out of the slave module.
Master (EH-TRMME)
Communication
connector
1] A
2] B
3] SHD
4] A
5] B
6] SHD
No. is the pin number.
Connection method when enabling the replacement of slave module while operating
Figure 5.6
Chapter 5
Slave (EH-TRMLE)
Communication
connector
1] A
2] B
3] SHD
4] A
5] B
6] SHD
Shielded
twist-pair cable
No. is the pin
number.
Normal connection method
Figure 5.5
Slave (EH-TRMLE)
Communication
1] A
2] B
Shielded
3] SHD
twist-pair cable
4] A
5] B
6] SHD
No. is the pin number.
5 – 3
Installation and Turning power supply on
Shielded
twist-pair cable
connector
Shielded
twist-pair cable
Slave (EH-TRMLE)
Communication
connector
1] A
2] B
3] SHD
4] A
5] B
6] SHD
No. is the pin
number.
Slave (EH-TRMLE)
Communication
connector
1] A
2] B
3] SHD
4] A
5] B
6] SHD
No. is the pin number.
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