AC 800M Controller (PM8xx)
Section 4 Operation
110
3BSE 027 941 R301
B(attery)
Green
Normal state – ON
Lit when condition of internal or external
battery is satisfactory. The LED is
controlled by a software battery voltage test
– BATTOK
(1)
.
Tx
Yellow
Data Transmission
CN1 + CN2 and COM3 + COM4
Flashes in synchronization with Tx traffic
Rx
Yellow
Data Reception
CN1 + CN2
COM3 + COM4
Flashes in synchronization with Rx traffic
Valid for PM861/PM864
PRIM(ary)
Yellow
Lit in single and redundant configuration.
Indicates Primary CPU in redundant
configuration. Controlled by software.
DUAL
Yellow
Lit when the CPU is running in redundant
configuration and synchronized state.
(1) The software performs cyclic battery voltage level tests via a dedicated LED control input. The
battery provides back-up power for both the application memory and the real time clock during
power down. The battery is either accessible via the PM8xx cover panel or externally connected
to the external battery connector. Battery voltage is checked by the software. Voltage is common
for both the internal and external battery. For this reason the internal battery should be removed
when using the external battery, since having two batteries connected in parallel will result in
greatly reduced capacity.
Table 15. PM8xx – LED Indicators (Continued)
Marking
Color
Function
Summary of Contents for AC 800M
Page 1: ...ControlIT AC 800M Version 2 1 Controller Hardware Hardware and Operation...
Page 2: ......
Page 3: ...Controller Hardware Hardware and Operation ControlIT AC 800M Version 2 1...
Page 10: ...7DEOH RI RQWHQWV 10 3BSE 027 941 R301...
Page 20: ...Related Documentation About This Book 20 3BSE 027 941 R301...
Page 26: ...Operating Environment Safety Summary 26 3BSE 027 941 R301...
Page 42: ...Product Release History Section 1 Introduction 42 3BSE 027 941 R301...
Page 108: ...Powering from an External 24 V DC Source Section 3 Configuration 108 3BSE 027 941 R301...
Page 118: ...Verification of Redundant CPU Section 4 Operation 118 3BSE 027 941 R301...
Page 212: ...Low Voltage Directive LVD Appendix D Directive Considerations 212 3BSE 027 941 R301...
Page 214: ...Hazardous Location Approval Appendix E Standards 214 3BSE 027 941 R301...
Page 228: ...QGH 228 3BSE 027 941 R301...
Page 229: ......