1 FUNCTIONS
1.6 Submaster Function
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1
Manual switch
While a submaster station is operating as a master operating station, the operation of the master station can be switched from
the submaster operation to the master operation with the procedure described below. Note, however, that this does not apply
when the master station is operating as a master operating station. Cyclic transmission is continued during switch. (The
output of the slave station is held during switch.)
1. In the submaster station operating as a master operating station, check that 'Forced master switching enable status'
(SB0066) is on. Then turn on 'Forced master switch command' (SB0019).
Whether the submaster station is operating as a master operating station can be checked using the following signals.
• 'Master/submaster function operation status of own station' (SB004E) is off.
• 'Master station information' (SB0070) is on.
2. When the master/local module receives a switch command, 'Forced master switching acceptance status' (SB0067) is
turned on, and the switch is started.
Cyclic transmission is continued during switch.
3. When the switch is completed, 'Forced master switching operation status' (SB0068) is turned on.
4. The result can be checked in 'Forced master switching command result' (SW005C).
5. Turn off 'Forced master switching command' (SB0019).
'Forced master switching acceptance status' (SB0067), 'Forced master switching operation status' (SB0068), and 'Forced
master switching command result' (SW005C) are turned off.
■Sample program of a manual switch
Classification Label name Description Device
Module label GF11_1.bReq_MasterSwitch Forced master switch command SB0019
GF11_1.bOpe_Submaster Master/submaster function operation status of own
station
SB004E
GF11_1.bVal_MasterSwitch Forced master switching enable status SB0066
GF11_1.bAcpt_MasterSwitch Forced master switching acceptance status SB0067
GF11_1.bCompl_MasterSwitch Forced master switching operation status SB0068
GF11_1.bOpe_DataLinkbySubmaster Master station information SB0070
GF11_1.bSts_BatonPassError_Master Baton pass error status of master station SB00A1
GF11_1.bSts_DataLinkError_Master Data link error status of master station SB00B1
GF11_1.uRslt_MasterSwitch Forced master switching command result SW005C
Label to be defined Define global labels as shown below:
(0) Pulsing the switching command
(5) Switching command
(16)Processing upon normal completion or abnormal end of the switch
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