Specifications

1070 072 131-102 (96.08) GB
BUEP64 Protocol 9-23
9.11.1 Protocol-specific Parameters — PW4 through PW16
Data traffic is parameterised by "3964R" for RST and PST via the proto-
col-specific parameters. The individual parameters are explained below.
9.11.1.1 Command / Operand Type — PW4
The protocol provides the SEND and FETCH commands (PW4 HIGH
byte):
Parameter word Contents
High byte LOW byte
PW4 Command type Operand type
Example 41H 01H
Send Word
Fig. 9-8 BÜP64 — Operand type
- SEND --> "A" = 41 hex
Data is transmitted from the RST to the PST
- FETCH --> "E" = 45 hex
Data is fetched from the PST and written to the RST
Data exchange between data modules is only permitted when BÜP64 is
implemented on the R500/R500P; the operand type (PW4 LOW byte) is
fixed for this reason.
- Operand type = WORD (01 hex)