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Appendix B: CRC-16 Calculation

02/13 Modbus® RTU Serial Communications User Manual 53

A.14 Time Register Map

Address

(hex)

(decimal)

Channel Number Access Notes

1BE0 47137 Hours R/W 0 to 23

1BE1 47138 Minutes R/W 0 to 60

1BE2 47139 Seconds R/W 0 to 60

1BE3 47140 Month R/W 1 to 12

1BE4 47141 Day R/W 1 to 31

1BE5 47142 Year R/W 00 to 99

VPR, VRX: accepts the values 0 – 37, 70

– 99, and 1970 – 2037. The values read

are always in the range of 1970 to 2037.

0 – 37 represents 2000 – 2037, 70 – 99

represents 1970 – 1999

DR4500: accepts 0-99 or 1970 – 2037

and ignores the century.

UDC3500: accepts 05-99

1BE6 47143 Week Day R/W 0 to 6 (0 = Sunday)

DR4500: R/W

VPR/VRX, UDC3500: ignored

ATTENTION

Clock registers must be written in a single transaction. They can be written in one transaction of registers 47137

through 47142 or one transaction of registers 47137 through 47143.

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Siemens NAN 67 Series Bedienungsanleitung Seite 59