Common Signals Transmitted By Transmitter/Receiver; Signals Transmitted By The Transmitter (Unique To Ecm Communication - Canon G3 Error Code List

Appendix
SEP (Selective Polling Address)
It is used for selective polling reception to indicate the location of a memory box (polling
box) of the other party.
PWD (Password)
It is used in selective polling reception to send a password if the memory box (polling
box) of the other party is protected by a password. It will not be sent if no password is
imposed on the memory box of the other party.

2.6 Common Signals Transmitted by Transmitter/Receiver

DCN (Disconnect)
It is used to instruct disconnection of the line. It does not require response from the other
party.
CRP (Command Repeat)
It is used to indicate that the signal from the other party had a transmission error, asking
for transmission of the signal once again.

2.7 Signals Transmitted by the Transmitter (unique to ECM communication)

PPS-NULL(Partial Page Signal-NULL)
It is used for transmission of multiple blocks, indicating the presence of a block that
follows.
PPS-Q (Partial Page Signal-Q)
Those signals that indicates the last block of a single page (PPS-EOP, PPS-EOM, PPS-
MPS) are at times generically called PPS-Q.
PPS-EOP (Partial Page Signal-EOP)
It is used to indicate the last block of a signal page, and means the same as EOP.
PPS-EOM (Partial Page Signal-EOM)
It is used to indicate the last block of a signal page, and means the same as EOM.
PPS-MPS (Partial Page Signal-MPS)
It is used to indicate the last block of a single page, and means the same as MPS.
PPS-PRI-Q (Partial Page Signal-PRI-Q)
Those signals that indicated the last block of a single page and that the operator may be
called (PPS-PRI-EOP, PPS-PRI-EOM, PPS-PRI-MPS) are at times be generically called
PPS-PRI-Q.
PPS-PRI-EOP (Partial Page Signal-PRI-EOP)
It is used to indicate the last block of a signal page, and means the same as PRI-EOP.
PPS-PRI-EOM (Partial Page Signal-PRI-EOM)
It is used to indicate the last block of a single page, and means the same as PRI-EOM.
PPS-PRI-MPS (Partial Page Signal-PRI-MPS)
It is used to indicate the last block of a signal page, and means the same as PRI-MPS.
EOR-NULL (End of Retransmission-NULL)
When multiple blocks are transmitted, an error frame may exist in a block, causing the
block to be transmitted repeatedly. The signal is sent to stop retransmission of the block.
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