Chapter 10: Communication Control
[4] Local node management table
This section shows the information about the local node as part of the network control information.
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+140 | Node number |
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+141 | Reserved area |
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+142 to 153 | Node name (facility name) |
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+154 to 165 | Vendor name |
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+166 to 177 | Manufacturer's model name |
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+200 | This node's status |
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+201 | Reserved area |
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+202 | FA link layer status => See below | LKS |
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+203 | Reserved area |
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+204 to 205 | Status of the upper layer => See below | ULS |
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+206 to 207 | Common memory (area 1) storage address | C_AD1 |
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+210 to 211 | Common memory (area 1) storage size | C_SZ1 |
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+212 to 213 | Common memory (area 2) storage address | C_AD2 |
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+214 to 215 | Common memory (area 2) storage size | C_SZ2 |
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+216 | Token monitor | TW |
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+217 | Reserved area |
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+220 | Minimum allowable time between frames | MFT |
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+221 | Reserved area |
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+222 | Protocol version | PVER |
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+223 | Reserved area |
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*1: Addresses +140 to 223(8) are offset addresses calculated from the top address that is stored in the parameter at addresses 30 to 32(8).
FA link layer status (LKS)
Shows the FA link status of the network.
Bit | Base address +202 |
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7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | ||
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Upper layer operation signal error
Notice to be effective common memory data
Complete common memory settings (address size)
Detected duplicate use of the same address
Upper layer status (ULS)
Show the upper layer status using RUN/STOP (1 bit), UERR (2 bits), and UERR CODE (12
bits). | Base address +205 |
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Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved bit
U ERR 00：NORMAL
01：WARNING
10：ALARM
11：ALARM
0：STOP
1：RUN
U ERR CODE (Upper layer error code: Defined by the upper layer)