8.5 Precautions

1

Connection to QnA (S) CPU type

Use B or a later function version of Ethernet module (QnA Series) and PLC CPU (QnA/QnASCPU type).

Connection to QSCPU

The GOT can only read device data and sequence programs by the ladder monitor function in the QSCPU.

The GOT cannot write any data to the QSCPU.

Connection to Q170MCPU

Set [CPU No.] to "2" in the device setting to monitor the device of the Motion CPU area (CPU No.2).

When the CPU No. is set to "1", the device on the PLC CPU area (CPU No.1) is monitored.

When the CPU No. is set to "0", the monitoring target differs depending on the GOT connection destination. Refer to the following.

GOT connection destination

Monitoring target

QJ71E71 module

PLC CPU area (CPU No.1)

 

 

PERIPHERAL I/F

Motion CPU area (CPU No.2)

 

 

When the CPU No. is set to the number other than "0" to "2", a communication error occurs and the monitoring cannot be executed.

For setting the CPU No., refer to the following manual.

GT Designer3 Version Screen Design Manual

Example) Setting dialog box of the bit device

Connection in the multiple CPU system

Connection to LCPU

LCPU may diagnose (check file system, recovering process, etc.) the SD memory card when turning on the power or when resetting. Therefore, it takes time until the SD memory card becomes available. When the GOT starts before the SD card becomes available, a system alarm occurs. Adjust the opening screen time in the GOT setup so that no system alarm occurs.

GT Designer3 Version Screen Design Manual

When connecting to multiple GOTs

(1)Setting PLC No.

When connecting two or more GOTs in the Ethernet network, set each [PLC No.] to the GOT.

8.3.1 Setting communication interface (Communication settings)

(2)Setting IP address

Do not use the IP address "192.168.0.18" when using multiple GOTs.

A communication error may occur on the GOT with the IP address.

(3)Setting for starting up multiple GOTs simultaneously (When connected to Built-in Ethernet port CPU) When connecting multiple GOTs to one Built-in Ethernet port CPU, adjust the timing of GOT communication start. When the communication concentrates on the PLC, the communication between GOT and PLC becomes difficult, and the monitoring by GOT may not start. As a method for adjusting the timing, communicating one GOT alone first, and then communicating the other GOTs is effective.

Set the following items on each GOT.

•[Startup Time] of [Controller Setting], or [Title Display Time] of [GOT Setup].

•[Timeout Time] of [Controller Setting]

The following shows a setting example.

 

HUB

 

 

 

QnUDE(H)CPU

GOT1

GOT2

GOT10

 

Item

GOT1

GOT2

GOT10

 

Startup Time

3sec (default)

4sec

4sec

 

Timeout Time

3sec (default)

4sec

4sec

When connecting to the multiple network equipment (including GOT) in a segment

PREPARATORYFORPROCEDURESMONITORING 2

RANGESETBE

DEVICE CANTHAT 3

RANGEACCESS MONITORINGFOR 4

MONITORTOREDUNTANTSYSTEM HOW 5

CONNECTIONBUS 6

DIRECTTOCONNECTIONCPU 7

LINK

When the GOT is connected to multiple CPU system,

By increasing the network load, the transmission speed

the following time is taken until when the PLC runs.

between the GOT and PLC may be reduced.

 

QCPU (Q mode), motion controller CPU (Q series): 10

The following actions may improve the communication

seconds or more

performance.

 

MELDAS C70: 18 seconds or more

• Using a switching hub

 

When the GOT starts before the PLC runs, a system

• More high speed by 100BASE-TX (100Mbps)

 

• Reduction of the monitoring points on GOT

 

alarm occurs. Adjust the opening screen time in the

 

GOT setup so that no system alarm occurs.

 

 

 

GT Designer3 Version Screen Design

 

 

 

 

 

 

Manual

 

 

 

 

 

 

 

 

8. ETHERNET CONNECTION

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COMPUTER CONNECTION 8

ETHERNETCONNECTION

8.5 Precautions