3
03.96
3.4 Handheld unit
3-54
 Siemens AG 2000 All Rights Reserved
SINUMERIK 840D Installation and Start-Up Guide (IAD) – 04.00 Edition
HHU
AS 314
(PLC)
Send
Receive
Fig. 3-9 Sending and receiving as seen from the HHU
Separate GD parameters are used for sending and receiving.
GD 1 . 1 . 1
Object number
GI number (global identifier)
GD circuit number (global data no.)
Fig. 3-10 Meaning of the GD parameters
Note
The GD parameters of the HHU and AS314 and PLC block FB1 must agree.
Table 3-5 Value range for GD parameters of the HHU
Designation Display Default
value
Value
range
PLC FB1
parameters
Receive GD circuit no. Rec-GD-No: 2 1–16 HHU Send
GD No
Receive GI no. Rec-GBZ-No: 1 1–255 HHU Send
GBZ No
Object no. for receive
GI
Rec-Obj-No: 1 1–255 HHU Send
Obj No
Send GD circuit no. Send-GD-No: 2 1–16 HHU Rec
GD No
Send GI no. Send-GBZ-No: 1 1–255 HHU Rec
GBZ No
Object no. for send GI Send-Obj-No: 1 1–255 HHU Rec
Obj No
SW 4
and
high–
er
Baud rate Baud rate: 187.5 k
(baud)
187.5 /
1.5 M
Bus address Bus address: 15 0–15
Meaning of the GD
parameters
3 Settin
s, MPI / OPI
08.97
05.98
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