DF1
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Can my ProSoft or ProLinx DFCM module communicate through an Allen-Bradley 1747-AIC module?
The 1747-AIC module only converts the signal from RS-485 to RS-232. It does not convert the protocol from DH-485 to DF1, which the DFCM module requires. For DH-485 communications, check the ProSoft website for modules which support DH-485....
Lire la suiteI am using a ProSoft DFCM solution (or possibly another DF1 protocol product) and I am having problems establishing and/or maintaining communications with a node that his been assigned Station Number
The number 16, or 10hex, is a special number in the protocol. This number is used as an 'attention' character, as special control character that alerts DF1 receivers that a command message or response is following.DF1 protocol messages can be long and complex. In some...
Lire la suiteWhat product can be used to connect more than one DF1 master device to one or more DF1 slave devices?
The 5202-DFNT-DFCM4 or the 5202-MNET-DFCM4 gateways are capable of allowing multiple masters to communicate with 1 or more DF1 slave devices.This gateway has 4 configurable DF1 serial ports that facilitates the exchange of data between the devices attached to the gateway....
Lire la suiteWhat does an error code of -200 (0xFF38) represent in my DFCM module?
An error code of -200 (0XFF38) indicates the DFCM module expected a DLE-ACK message from the DF1 device, but received a DLE-NAK instead.Related Keywords:ProLinx MVI46 MVI56 MVI71 MVI94 DF1...
Lire la suiteIs there a limit, in a DF1 message, of the number of registers requested or written in 1 command?
Yes, the DF1 protocol limits the amount of words transmitted in a single command. This amount varies based on the functions code being used.Related Keywords:DFCM MVI46 MVI56 MVI71 DF1 ProLinx MVI94...
Lire la suiteWhy am I unable to communicate with Wonderware from a 4xxx or 5xxx Series gateway in a full Duplex DF1 configuration
The Wonderware driver ABKF2 does not process or use the station ID when operating in Full Duplex mode. The DF1 full duplex specification requires a station id when more than one device is present on a network.A workaround has been implemented in our DF1 implementation. ...
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