Parker Hauser COMPAX-M Series Interface Manual

Also see for Hauser COMPAX 02XXM Series: User guide

2. Object index Interbus-S66OBJECT_REQWrite or read communication via process data channel.The object is selected with the 7 Bit-wide index pointer (please see footnote); the respective element of an object is selectedwith the sub-index. The highest bit of the data byte 1 determines the object access (0 = write; 1 = read).The acknowledgement for a write-access or the answer for a read-access is passed onto the object OBJECT_RSP.Every value change in OBJECT_REQ is acknowledged by the complementation of AckToggle (STATUSWORT/CPX_ZSWData byte1 Bit 0). If the value change results in the writing or reading of an object, AckToggle is only complemented when thewrite/read process is completely finished.If the index pointer does not equal 0, every value change in OBJECT_REQ results in writing or reading the selected objects orone of its elements. If an object is described with the same value in succession (z. B. POSR), the index pointer must be set to 0and then reset to its original value.Object DescriptionIndex 0x5FC5Symbol OBJECT_REQ Length 6 Access groups 0Object code Simple var. Password 0Data type Octet string Access rights Write all PD Map PADData DescriptionData byte [Bit] Assignment Data byte[Bit] Assignment1[7] 0 = Object write; 1 = Object read 3 Object-Data byte 11 [6 ... 0] Index(Object) pointer1 4 Object-Data byte 25 Object-Data byte 32 Sub-index 6 Object-Data byte 4OBJECT_RSPAcknowledgement for a write-access or answer to a read-access to an object via OBJECT_REQ.Object DescriptionIndex 0x5FC6Symbol OBJECT_RSP Length 6 Access groups 0Object code Simple var. Password 0Data type Octet string Access rights Read all PD Map PEDData DescriptionData byte Assignment -Write-access Assignment –Read-access Assignment -error1 like OBJECT_REQ like OBJECT_REQ 0xFF2 like OBJECT_REQ like OBJECT_REQ like OBJECT_REQ3 like OBJECT_REQ Object data byte 1 Error number4 like OBJECT_REQ Object data byte 2 0x005 like OBJECT_REQ Object data byte 3 0x006 like OBJECT_REQ Object data byte 4 0x00No.: Meaning No.: Meaning82 Wrong index(object)-pointer. 84 Object cannot be read.83 Incorrect Sub-index. 85 Object cannot be written.The specific COMPAX error messages are outlined in the COMPAX product manual.1 Please ensure that the index pointer and not the index of the required object is entered. You will find the respective indexpointer for the onject in the object overview from page 10onwards.