Omron CVM1-CLK21, CS1W-RPT01 Setting the Unit after Replacement, Resetting Network Parameters

Handling Precautions Section 9-6

Relay Terminal Blocks (CJ1W-TB101) can be used on any node but the end nodes to enable replacing the Controller Link Unit with the communi- cations cable connected and turn OFF the power to only the Unit being re- placed. Refer to Appendix C Using the Relay Terminal Block for details.

3.When replacing the Unit, do not reconnect that node to the Network before carrying out the procedures listed below. In particular, a node with a small address will become the polling node and communicate the initial network parameter status to other nodes, so there is the chance that network pa- rameters in the entire Network will be damaged.

9-6-2 Setting the Unit after Replacement

After replacing a Controller Link Unit, reset the hardware switches, software switches, and data link tables, and wire it in the same manner as the previous Unit. This section describes settings that require particular care. Refer to the Unit replacement methods later in this section for details on replacing the Unit.

!Caution After replacing the CPU Unit, transfer important data, such as DM and HR Area contents, to the new CPU Unit before restarting operation. Depending on the program, accidents can occur as a result of incorrect DM or HR Area contents.

CS/CJ-series, CVM1, and CV-series Controller Link Units store data such as data link tables, network parameters, and routing tables in the CPU Unit. When replacing the CPU Unit, reset these settings using the Controller Link Support Software.

Resetting Network Parameters

When a C200HX/HG/HE or CQM1H-series Controller Link Unit has been replaced or a CPU Unit has been replaced for a CS/CJ-series, CVM1, or CV- series Controller Link Unit, it is necessary to reset the network parameters, data link tables, and routing tables. This sections describes the resetting pro- cedure for the network parameters. For details on data link table resetting pro- cedures, refer to 5-2 Setting Data Links and for routing table resetting procedures, refer to 7-4 Setting Routing Tables.

1,2,3... 1. Network parameters are read from the polling node when the Network is activated and this information is distributed to all nodes in the Network. For this reason, set the polled/polling node setting in the DM Parameter Area for the node replaced to a polled node before reconnecting the Unit to the Network. For C200HX/HG/HE and CQM1H-series Controller Link Units, the EEPROM Clear Bit in the DM Parameter Area will already be set to clear EEPROM (ON or 1).

CS/CJ-series Controller Link Units

DM 30000 + 100 ⋅ n
	−	– : Other settings
n = Unit number

Polled node/polling node 0: Polling node 1: Polled node

C200HX/HG/HE Controller Link Units

Operating level 0	Operating level 1	–: Other settings
DM 6400	DM 6420
	EEPROM Clear Bit	0: Do not clear EEPROM
		1: Clear EEPROM

Polled node/polling node 0: Polling node 1: Polled node

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