Parker Hauser COMPAX-M Series - OBJECT_REQ and OBJECT_RSP for 8 Byte Process Data Channel

2. Object index
Interbus-S
64
OBJECT_REQ and OBJECT_RSP for 8 byte process data channel
The two new objects OBJECT_REQ and OBJECT_RSP make it possible to access all communication objects (or certain
elements) with a data width of
≤
4 byte via the process data channel.
The object OBJECT_REQ can be assigned to the PAD channel (PAD3...PAD8):
♦
permanently with P139 = 6276352 (=0x5fc500)
♦
temporarily (
if P196 Bit 5 = 1
) as follows:
1. Save values of PAD3...PAD8 if necessary (save target values).
2.
FreezePAD
(STEUERWORT/CPX_STW Data byte1 Bit 1)
= 1
This freezes the previous PAD, no more value changes on the PAD are made.
3. Wait until
AckToggle
(STATUSWORT/CPX_ZSW Data byte1 Bit0) has
changed its value
.
4. PAD3...PAD8 = 0
5.
ObjectReqEnable
(STEUERWORT/CPX_STW Data byte1 Bit0)
= 1
6. Wait until
AckToggle
(STATUSWORT/CPX_ZSW Data byte1 Bit0) has
changed its value
.
PAD3...PAD8 will now be transferred to OBJECT_REQ
7. write and/or read all required objects
8.
ObjectReqEnable
(STEUERWORT/CPX_STW Data byte1 Bit0)
= 0
9. Wait until
AckToggle
(STATUSWORT/CPX_ZSW Data byte1 Bit0) has
changed its value
.
10. Reset PAD3...PAD8 to their original target values
11.
FreezePAD
(STEUERWORT/CPX_STW Data byte1 Bit 1)
= 0
12. W ait until
AckToggle
(STATUSWORT/CPX_ZSW Data byte1 Bit0) has
changed its value
.
PAD3...PAD8 will now be transferred to the original objects
Object OBJECT_RSP can be assigned to the PED channel (PED3...PED8):
♦
permanently with P135= 6276608 (0x5fc6000)
♦
temporarily parallel with
ObjectReqEnable
(STEUERWORT/CPX_STW Data byte1 Bit0)
= 1
(
if P196 Bit 6=0
and
P196 Bit 5 =
1
))
or separately via the object CONTROL