Toshiba GR200 Series Instruction Manual page 1168

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Port 1 (i.e., Port A) is connected.

Port 2 (i.e., Port B) is not connected.

Figure 11.2-2 Communication status

Status signals for Port A and Port B:

using PLC signal monitoring points 'Port1_Link (3100061001)' and 'Port2_Link

(3100061001)' of the HOTST function. For example, when the user wishes to monitor

the status of the Prot1_Link, use the 'Port1_Link'. Consequently, the user can get the

physical information about the Port A: the value '1' is issued when the communication

is made (Linkup), whereas value '0' is issued when the communication is not made

When Hot_Standby is set for the [RedundantMode], the user can find a running port

using the PLC signal monitoring point 'Using_CH (3100081001)' of the HOTST

function. Value '1' is provided when the Port A is running, whereas value '2' is

provided when the Port B is running.

Monitor setting: The Hot-standby (HOTST) function can send PING packets to

remote devices thus enabling the Hot-standby function to monitor the state of the

network. The Hot-standby function checks for a response signal from the remote

device. If the Hot-standby function does not receive a response signal, the Hot-

standby function will switch to the other port. The operation is performed when

the user sets the [RedundantMode]= Hot_Standby and [NetMonitor_EN] = On.

Settings [Ping_IP1] to [Ping_IP12] are provided in the Hot-standby function for the

monitoring of remote devices on the network. When the user sets plural remote IP

addresses for the settings [Ping_IP*], and if the Hot-standby function does not receive

a response from any one of these remote devices, the Hot-standby function determines

that a communication failure has occurred. Table 11.2-3 shows the network

monitoring settings for Hot-standby operation.

Ports 1&2 (i.e., Port A&B) are connected.

The user can also examine the LAN status

6F2S1915 (0.46)

GRZ200 (Soft 031 & 032)