Panasonic MEWNET-F Technical Manual page 5

7.Operation Modes for Controlling MEWNET-F ..................7-1
7.1 How to Change the Operation Mode (System Register Setting) ............... 7-2
7.1.1 Operation Mode Changeable.....................................................................7-2
7.1.2 How to Change the Remote I/O Operation Mode......................................7-2
7.1.3 System Registers for the Remote I/O Operating Mode .............................7-2
7.2 Remote I/O Control When an Error Occurs ............................................... 7-3
7.2.1 Operation Status When a Communication Error Occurs ...........................7-4
7.2.2 Operation When an Error Occurs in a Unit Connected to a Slave Station
7.3 Slave Station Connection Confirmation Mode ........................................... 7-9
7.3.1 Slave Station Connection Confirmation Mode ...........................................7-9
7.3.2 Slave Station Connection Not Confirmed Mode ......................................7-10
7.4 Remote I/O Update Timing Method ......................................................... 7-11
7.4.1 Scan Asynchronous Mode .......................................................................7-11
7.4.2 Scan Time Synchronous Mode................................................................7-12
8.Control by MEWNET-F .......................................................8-1
8.1 Functions of MEWNET-F........................................................................... 8-2
8.1.1 Remote I/O Control ....................................................................................8-2
8.1.2 Memory Access Function...........................................................................8-3
9.Troubleshooting .................................................................9-1
9.1 Finding the Cause of an Error and Correcting the Error ............................ 9-2
9.1.1 Finding the Cause of an Error....................................................................9-2
9.2 Self-diagnostic Functions of MEWNET-F .................................................. 9-3
9.2.1 Self-diagnostic Error Table ........................................................................9-3
9.3 Remote I/O Error Codes (DT9136(DT90136) and DT9137(DT90137))..... 9-4
9.3.1 Contents of Special Data Registers DT9136 and DT9137 ........................9-4
9.4 Check a Slave Station Which Has Produced an Error (DT9131(DT90131) to
DT9135(DT90135)).......................................................................................... 9-6
9.5 Troubleshooting ......................................................................................... 9-9
9.5.1 Flowchart (Main Flowchart)........................................................................9-9
9.5.2 When the ALARM LED is ON ..................................................................9-11
9.5.3 When the Communication LED on the Master Unit does Not Flash Normally9-12
9.5.4 When the Communication LED on a Slave Station does Not Flash Normally9-15
9.5.5 When the CPU does Not Operate............................................................9-18
9.5.6 When the Input/Output Function of a Slave Station does Not Work........9-19
9.5.7 When the Memory Access Function for the Advanced Unit's Memory does
System ....................................................................................................7-7
Not Work ...............................................................................................9-20