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Appendix G
E5jJ Temperature Controller Protocol
232
Note 1. The connection configuration is a one-to-one or a one-to-N configuration. Using a one-to-N configura-
tion, up to 32 units can be connected including the Serial Communications Board.
2. The maximum cable length is 500 m. Use shielded twisted-pair cable (AWG28i or greater).
3. Connect terminating resistance to the devices only at both ends of the transmission path.
4. The total terminating resistance at both ends must be at least 100 Ω for RS-422A or 54 Ω for RS-485.
Select Remote Mode (Sequence No. 200)
Switches the Controller to remote mode.
Send Data Word Allocation (2nd Operand of PMCR)
First word of send
data
Number of send data words+0
+1
(Undefined)
Unit No.
Offset Contents (data format) Data
+0 Number of send data words
(4 digits BCD)
0002 (fixed)
+1 Unit No. (2 digits BCD) 00 to 31
Receive Data Word Allocation (3rd Operand of PMCR)
None.
Select Local Mode (Sequence No. 201)
Switches the Controller to local mode.
Send Data Word Allocation (2nd Operand of PMCR)
First word of
send data
Number of send data words+0
+1
(Undefined)
Unit No.
Offset Contents (data format) Data
+0 Number of send data words
(4 digits BCD)
0002 (fixed)
+1 Unit No. (2 digits BCD) 00 to 31
Receive Data Word Allocation (3rd Operand of PMCR)
None.
Select Backup Mode (Sequence No. 202)
Switches from the set point write mode to backup mode.
Send Data Word Allocation (2nd Operand of PMCR)
First word of
send data
Number of send data words+0
+1
(Undefined)
Unit No.
Offset Contents (data format) Data
+0 Number of send data words
(4 digits BCD)
0002 (fixed)
+1 Unit No. (2 digits BCD) 00 to 31
Receive Data Word Allocation (3rd Operand of PMCR)
None.
Select RAM Write Mode (Sequence No. 203)
Switches from set point write mode to RAM write mode.