I-Gard DSP-OHMNI, Manual

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The response of Table 12 will confirm this request:
UNIT I/D FUNCTION COIL ADDRESS FORCE COIL CRC
01 05 High Low High Low High Low
00 00 ff 00 nn nn
Table 12: Returned Information from DSP Following a Force Bit Request
The registers can be read either one at a time or in a continuous block up to a maximum of 100 registers at a time.
There are times when the DSP processor will not be able to respond to a request since it is busy with other tasks and
no response will be returned. For this reason it is recommended to request the maximum number of registers used
by the system in a single request. Since the DSP is set up to 50 current registers, 50 status registers and 50 priority
registers followed by the system function registers, it is best to read the data with three consecutive requests.
Note: The DSP will not respond to requests if the DSP-DM is in the SETUP mode.
The feeder module currents IGf values are contained in the first 50 registers as follows. The values range from 0x00
to 0xff although maximum for a first fault condition will be 0x64 or 100%. Table 8 lists the register addresses in the
MODBUS convention.
REGISTER NO. CONTENTS FORMAT
40001 Feeder 1 I gf
0x00 nn
40002 Feeder 2 I gf
40003 Feeder 3 I gf
Feeder Module Status is represented by five valid states as follows:
0x00 = OK
0x01 = Faulted Feeder
0x02 = Feeder Tripped
0x03 = Test Button Pushed
0x0f = Not available
The following registers return two bytes – The first byte is always 0x00 with the second returning status in hexadeci -
mal as above.
Table 13: Feeder Module Ground Current Addresses
REGISTER NO
CONTENTS
FUNCTION FORMAT
40051 Feeder 1 Status
0x00 nn
40052 Feeder 2 Status
40053 Feeder 3 Status
Table 14: Feeder Module Status Addresses
REGISTER NO CONTENTS
FUNCTION FORMAT
40101 Feeder 1 Priority 0x00nn
40102 Feeder 2 Priority
Table 15: Feeder Module Priority Addresses