Chapter 10: Communication Control

[5] Participating node management table

Shows the information for the node numbers at address offset +300 for each table.

Address(8)

Details

Corresponding

header information

 

 

+224 to 225

Common memory (area 1) storage address

C_AD1

 

 

 

+226 to 227

Common memory (area 1) storage size

C_SZ1

 

 

 

+230 to 231

Common memory (area 2) storage address

C_AD2

 

 

 

+232 to 233

Common memory (area 2) storage size

C_SZ2

 

 

 

+234

FA link layer status

LKS

 

 

 

+235

Reserved area

 

 

 

 

+236 to 237

Upper layer status

ULS

 

 

 

+240

Token monitor timeout time

TW

 

 

 

+241

Reserved area

 

 

 

 

+242

Minimum allowable time between frames

MTF

 

 

 

+243

Reserved area

 

 

 

 

+244 to 245

Time allowed for the refresh cycle

RCT

 

 

 

+246 to 253

Reserved

 

 

 

 

-Addresses +224 to 253(8) are offset addresses calculated from the top address that is stored in the parameter at addresses 30 to 32(8).

-The details of the offset addresses at +234 (FA link layer status) and at +236 to 237 (upper layer status) are the same as for offset addresses +202 and +204 to 205 in the Local Node Control Table.

[6]Network management table

Shows the information shared by the network.

 

 

Address(8)

Details

Corresponding

 

 

10

 

header information

 

 

 

 

+254

Token holding the node number

 

 

 

 

 

 

 

 

 

 

 

+255

Reserved area

 

 

 

 

 

 

+256

Minimum allowable time between frames

MFT

 

 

 

 

 

+257

Reserved area

 

 

 

 

 

 

 

 

+260 to 261

Refresh cycle measured time (calculated value)

 

 

 

 

 

 

 

 

+262 to 263

Refresh cycle measured time (current value)

 

 

 

 

 

 

 

 

+264 to 265

Refresh cycle measured time (max. value)

 

 

 

 

 

 

 

 

+266 to 267

Refresh cycle measured time (min. value)

 

 

 

 

 

 

-Addresses +254 to 267(8) are offset addresses calculated from the top address that is stored in the parameter at addresses 30 to 32(8).

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